Summary of Content for ASUS A55M-E Motherboard User Manual PDF
E8265 First Edition April 2013
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Contents Safety information ...................................................................................................... iv About this guide ......................................................................................................... iv Package contents ....................................................................................................... vi A55M-E specifications summary .............................................................................. vi
Chapter 1: Product introduction 1.1 Before you proceed ......................................................................................1-1 1.2 Motherboard overview .................................................................................1-2 1.3 Accelerated Processing Unit (APU) ............................................................ 1-4 1.4 System memory ............................................................................................1-7 1.5 Expansion slots ..........................................................................................1-10 1.6 Jumpers.......................................................................................................1-12 1.7 Connectors ..................................................................................................1-14 1.8 Software support ........................................................................................1-21
Chapter 2: BIOS information 2.1 Managing and updating your BIOS ............................................................. 2-1 2.2 BIOS setup program .....................................................................................2-5 2.3 Main menu .....................................................................................................2-9 2.4 Ai Tweaker menu ..........................................................................................2-9 2.5 Advanced menu .......................................................................................... 2-11 2.6 Monitor menu .............................................................................................. 2-11 2.7 Boot menu ...................................................................................................2-12 2.8 Tools menu ..................................................................................................2-13 2.9 Exit menu ....................................................................................................2-13
Appendices Notices ..................................................................................................................... A-1 ASUS contact information ...................................................................................... A-4
Safety information Electrical safety
To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device. Before connecting or removing signal cables from the motherboard, ensure that all power cables are unplugged. Seek professional assistance before using an adapter or extension cord. These devices could interrupt the grounding circuit. Ensure that your power supply is set to the correct voltage in your area. If you are not sure about the voltage of the electrical outlet you are using, contact your local power company. If the power supply is broken, do not try to fix it by yourself. Contact a qualified service technician or your retailer.
Operation safety Before installing the motherboard and adding devices on it, carefully read all the manuals that came with the package. Before using the product, ensure all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately. To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry. Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may become wet. Place the product on a stable surface. If you encounter technical problems with the product, contact a qualified service technician or your retailer.
About this guide This user guide contains the information you need when installing and configuring the motherboard.
How this guide is organized This guide contains the following parts: Chapter 1: Product introduction
This chapter describes the features of the motherboard and the new technology it supports.
Chapter 2: BIOS information This chapter tells how to change system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided.
Where to find more information Refer to the following sources for additional information and for product and software updates. 1. ASUS websites
The ASUS website provides updated information on ASUS hardware and software products. Refer to the ASUS contact information.
2. Optional documentation Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer. These documents are not part of the standard package.
Conventions used in this guide To ensure that you perform certain tasks properly, take note of the following symbols used throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to complete a task.
CAUTION: Information to prevent damage to the components when trying to complete a task
IMPORTANT: Instructions that you MUST follow to complete a task. .
NOTE: Tips and additional information to help you complete a task.
Typography Bold text Indicates a menu or an item to select. Italics Used to emphasize a word or a phrase.
means that you must press the enclosed key.
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A55M-E specifications summary APU AMD Socket FM2 A-series/Athlon Series Processors
AMD Turbo Core Technology 3.0 support Microsoft DirectX 11 support Refer to www.asus.com for the AMD APU support list.
Chipset AMD A55 FCH (Hudson D2) Memory 2 x 240-pin DIMM slots support maximum 32GB unbuffered non-ECC
DDR3 1866 / 1600 / 1333 / 1066 MHz memory modules Dual-channel memory architecture Supports AMD Memory Profile (AMP) memory The maximum 32GB memory capacity can be supported with 16GB or above
DIMMs. ASUS will update the memory QVL once the DIMMs are available in the market.
Refer to www.asus.com for the latest Memory QVL (Qualified Vendors List). When you install a total memory of 4GB capacity or more, Windows 32-bit
operating system may only recognize less than 3GB. We recommend a maximum of 3GB system memory if you are using a Windows 32-bit operating system.
Graphics Integrated AMD Radeon HD 7000/8000 Series Graphics in the A-Series APU
Supports DVI-D and D-Sub ports Supports DVI with max. resolution 2560x1600@60Hz Supports D-Sub with max. resolution 1920x1600@60Hz AMD Dual Graphics technology support* Supports Microsoft DirectX 11 Refer to http://www.amd.com/us/products/technologies/dual-graphics/
Pages/dual-graphics.aspx#3 for the discrete GPUs which support Dual Graphics technology.
Expansion slots 1 x PCIe 2.0 x16 slot 1 x PCIe 2.0 x1 slots 1 x PCI slot
Package contents Check your motherboard package for the following items.
Motherboard ASUS A55M-E motherboard
Cables 2 x Serial ATA 3.0 Gb/s cables
Accessories 1 x I/O Shield
Application DVD Support DVD
Documentation User Guide
If any of the above items is damaged or missing, contact your retailer.
The illustrated items above are for reference only. Actual product specifications may vary with different models.
A55M-E specifications summary
Storage / RAID AMD A55 FCH: - 4 x Serial ATA 3.0Gb/s connectors support RAID 0, RAID 1, RAID 10 and
JBOD configurations LAN Realtek 8111F PCIe Gigabit LAN controller
Audio Realtek ALC887-VD 8-channel High Definition Audio CODEC Use a chassis with HD audio module in the front panel to support an 8-channel
USB AMD A55 FCH: - 8 x USB 2.0/1.1 ports (4 ports at the mid-board, 4 ports at the back panel)
ASUS unique features
ASUS DIGI+ VRM ASUS 3+2 Phase Power Design Network iControl ASUS EPU ASUS AI Suite II ASUS UEFI BIOS EZ Mode ASUS Anti-Surge Protection ASUS Fan Xpert ASUS CrashFree BIOS 3 ASUS EZ Flash 2 ASUS MyLogo 2
Special features 100% All high quality conductive polymer
Back Panel I/O ports
1 x PS/2 mouse port (green) 1 x PS/2 keyboard port (purple) 1 x DVI-D port 1 x D-Sub output port 1 x LAN (RJ-45) port 4 x USB 2.0/1.1 ports 8-channel audio I/O ports (3-jack)
Internal I/O connectors / buttons / switches
2 x USB 2.0/1.1 connectors support additional 4 USB 2.0/1.1 ports 4 x SATA 3.0Gb/s connectors 1 x COM connector 1 x System panel connector 1 x Internal Speaker connector 1 x CPU fan connector (4-pin) 1 x S/PDIF output connector 1 x Chassis fan connector (3-pin) 1 x Front panel audio connector 1 x 24-pin EATX power connector 1 x 4-pin ATX 12V power connector
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A55M-E specifications summary
Specifications are subject to change without notice.
BIOS 32 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI 2.0, WfM 2.0, SM BIOS 2.6, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFreen BIOS 3, F12 Printscreen function, F3 Shortcut function and ASUS DRAM SPD (Serial Presence Detect) memory information
Support DVD Drivers ASUS Update ASUS utilities Anti-Virus software (OEM version)
Form factor uATX form factor: 8.9 in x 7 in (22.6 cm x 17.8 cm)
ASUS A55M-E 1-1
Product introduction 1 1.1 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings.
Unplug the power cord from the wall socket before touching any component.
Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to avoid damaging them due to static electricity.
Hold components by the edges to avoid touching the ICs on them.
Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component.
Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components.
Standby Power LED The motherboard comes with a standby power LED that lights up to indicate that the system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down the system and unplug the power cable before removing or plugging in any motherboard component. The illustration below shows the location of the onboard LED.
ON Standby Power Powered Off
A55M-E Onboard LED
1-2 Chapter 1: Product introduction
Place this side towards the rear of the chassis
1.2 Motherboard overview Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it.
Ensure that you unplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components.
1.2.1 Placement direction When installing the motherboard, ensure that you place it into the chassis in the correct orientation. The edge with external ports goes to the rear part of the chassis as indicated in the image below.
1.2.2 Screw holes Place six screws into the holes indicated by circles to secure the motherboard to the chassis.
Do not overtighten the screws! Doing so can damage the motherboard.
ASUS A55M-E 1-3
1.2.3 Motherboard layout
Lithium Cell CMOS Power
12 1113 69 81014154
Connectors/Jumpers/Slots/LED Page 1. Keyboard power (3-pin KBPWR) 1-13 2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 1-16 3. AMD FM2 socket 1-4 4. CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN) 1-15 5. DDR3 DIMM slots 1-7 6. SATA 3.0Gb/s connectors (7-pin SATA3G_1~4) 1-17 7. Clear RTC RAM (3-pin CLRTC) 1-12 8. Speaker connector (4-pin SPEAKER) 1-18 9. System panel connector (10-1 pin F_PANEL) 1-18 10. USB 2.0 connectors (10-1 pin USB56, USB78) 1-20 11. USB device wake-up (3-pin USBPW1-4, 3-pin USBPW5-8) 1-13 12. Serial port connector (10-1 pin COM) 1-20 13. Digital audio connector (4-1 pin SPDIF_OUT) 1-19 14. Front panel audio connector (10-1 pin AAFP) 1-19 15. Standby power LED (SB_PWR) 1-1
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Ensure that you use an APU designed for the FM2 socket. The APU fits in only one correct orientation. DO NOT force the APU into the socket to prevent bending the pins and damaging the APU!
1.3 Accelerated Processing Unit (APU) This motherboard comes with an FM2 socket designed for AMD A-series accelerated processors with AMD Radeon HD 7000/8000 series graphics.
A55M-E CPU socket FM2
1.3.1 Installing the APU
ASUS A55M-E 1-5
1.3.2 APU heatsink and fan assembly installation
Apply the Thermal Interface Material to the APU heatsink and APU before you install the heatsink and fan if necessary.
To install the APU heatsink and fan assembly
1-6 Chapter 1: Product introduction
To uninstall the APU heatsink and fan assembly
1 2 3
ASUS A55M-E 1-7
1.4 System memory 1.4.1 Overview The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules (DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for better performance with less power consumption. The figure illustrates the location of the DDR3 DIMM sockets:
Channel Sockets Channel A DIMM_A1 Channel B DIMM_B1
A55M-E 240-pin DDR3 DIMM sockets
1-8 Chapter 1: Product introduction
1.4.2 Memory configurations You may install 1GB, 2GB, 4GB, and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM sockets.
You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation.
We recommend that you install the memory modules from the blue slots for better overclocking capability.
Always install DIMMs with the same CAS latency. For optimal compatibility, we recommend that you install memory modules of the same version or date code (D/C) from the same vendor. Check with the retailer to get the correct memory modules.
Due to the memory address limitation on 32-bit Windows OS, when you install 4GB or more memory on the motherboard, the actual usable memory for the OS can be about 3GB or less. For effective use of memory, we recommend that you do any of the following:
- Install a maximum of 3GB system memory if you are using a 32-bit Windows OS. - Use a 64-bit Windows OS if you want to install 4GB or more memory on the motherboard.
This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less.
The maximum 32GB memory capacity can be supported with 16GB or above DIMMs. ASUS will update the memory QVL once the DIMMs are available in the market.
The default memory operation frequency is dependent on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. To operate at the vendor-marked or at a higher frequency, refer to section 2.4 Ai Tweaker menu for manual memory frequency adjustment.
For system stability, use a more efficient memory cooling system to support a full memory load (2 DIMMs) or overclocking condition.
Refer to www.asus.com for the latest Memory QVL (Qualified Vendors List).
ASUS A55M-E 1-9
1.4.3 Installing a DIMM
To remove a DIMM
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1.5 Expansion slots In the future, you may need to install expansion cards. The following sub-sections describe the slots and the expansion cards that they support.
Unplug the power cord before adding or removing expansion cards. Failure to do so may cause you physical injury and damage motherboard components.
1.5.1 Installing an expansion card To install an expansion card:
1. Before installing the expansion card, read the documentation that came with it and make the necessary hardware settings for the card.
2. Remove the system unit cover (if your motherboard is already installed in a chassis).
3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later use.
4. Align the card connector with the slot and press firmly until the card is completely seated on the slot.
5. Secure the card to the chassis with the screw you removed earlier.
6. Replace the system cover.
1.5.2 Configuring an expansion card After installing the expansion card, configure it by adjusting the software settings.
1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for information on BIOS setup.
2. Assign an IRQ to the card.
3. Install the software drivers for the expansion card.
When using PCI cards on shared slots, ensure that the drivers support Share IRQ or that the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable.
1.5.3 PCI slot The PCI slot supports cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specifications.
ASUS A55M-E 1-11
1.5.4 PCI Express x1 slot This motherboard supports PCI Express 2.0 x1 network cards, SCSI cards, and other cards that comply with the PCI Express specifications.
1.5.5 PCI Express x16 slot This motherboard supports one PCI Express x16 graphics cards that comply with the PCI Express specifications.
IRQ assignments for this motherboard
A B C D E F G H
PCIEx1_1 shared PCI1 slot shared Realtek LAN controller shared - HD audio shared SATA controller shared On Chip USB EHCI 1/2/3 shared On Chip USB OHCI 1/2/3/4 shared
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1.6 Jumpers Clear RTC RAM (3-pin CLRTC)
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear the CMOS memory of date, time, and system setup parameters by erasing the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in CMOS, which include system setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3 for about 5-10 seconds, then move the cap back to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS setup to re- enter data.
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default position. Removing the cap will cause system boot failure!
If the steps above do not help, remove the onboard battery and move the jumper again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.
You do not need to clear the RTC when the system hangs due to overclocking. For system failure due to overclocking, use the CPU Parameter Recall (C.P.R.) feature. Shut down and reboot the system, then the BIOS automatically resets parameter settings to default values.
A55M-E Clear RTC RAM
1 2 2 3
ASUS A55M-E 1-13
2. USB device wake-up (3-pin USBPW1-4, 3-pin USBPW5-8) Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped, DRAM refreshed, system running in low power mode) using the connected USB devices. Set to +5VSB to wake up from S3 and S4 sleep modes (no power to CPU, DRAM in slow refresh, power supply in reduced power mode).
The USB device wake-up feature requires a power supply that can provide 500mA on the +5VSB lead for each USB port; otherwise, the system would not power up.
The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode.
A55M-E 21 2 3
21 2 3
+5V +5VSB (Default)
A55M-E USB Device Wake Up
3. Keyboard power (3-pin KBPWR) This jumper allows you to enable or disable the keyboard wake-up feature. When you set this jumper to pins 2-3 (+5VSB), you can wake up the computer by pressing a key on the keyboard. This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS.
A55M-E Keyboard power setting
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1.7 Connectors 1.7.1 Rear panel connectors
57 69 8
1. PS/2 Mouse port (green). This port is for a PS/2 mouse.
2. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN) through a network hub.
LAN port LED indications
Activity/Link LED Speed LED Status Description Status Description OFF No link OFF 10Mbps connection ORANGE Linked ORANGE 100Mbps connection BLINKING Data activity GREEN 1Gbps connection LAN port
3. Line In port (light blue). This port connects to the tape, CD, DVD player, or other audio sources.
4. Line Out port (lime). This port connects to a headphone or a speaker. In the 4, 6, and 8-channel configurations, the function of this port becomes Front Speaker Out.
5. Microphone port (pink). This port connects to a microphone.
Refer to the audio configuration table below for the function of the audio ports in 2, 4, 6, or 8-channel configuration.
Audio 2, 4, 6, or 8-channel configuration
Port Headset 2-channel 4-channel 6-channel 8-channel
Light Blue (Rear panel) Line In Rear Speaker Out Rear Speaker Out Rear Speaker Out Lime (Rear panel) Line Out Front Speaker Out Front Speaker Out Front Speaker Out Pink (Rear panel) Mic In Mic In Bass/Center Bass/Center Lime (Front panel) Side Speaker Out
ASUS A55M-E 1-15
To configure an 8-channel audio output:
Use a chassis with HD audio module in the front panel to support an 8-channel audio output.
6. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are for USB 2.0/1.1 devices.
7. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are for USB 2.0/1.1 devices.
8. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other VGA-compatible devices.
9. DVI-D port. This port is for any DVI-D compatible device. DVI-D cant be converted to output RGB Signal to CRT and isnt compatible with DVI-I.
10. PS/2 Keyboard port (purple). This port is for a PS/2 keyboard.
1.7.2 Internal connectors 1. CPU and chassis fan connectors (4-pin CPU_FAN, and 3-pin CHA_FAN)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the black wire of each cable matches the ground pin of the connector.
The CPU_FAN connector supports a CPU fan of maximum 2A (24 W) fan power.
Only the CPU_FAN connector support the ASUS Fan Xpert feature.
DO NOT forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors.
A55M-E Fan connectors
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2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) These connectors are for an ATX power supply. The plugs from the power supply are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.
We recommend that you use an ATX 12V Specification 2.0-compliant power supply unit (PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin power plugs.
If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin power plug can provide at least 15 A on +12 V and that the PSU has a minimum power rating of 300W. The system may become unstable or may not boot up if the power is inadequate.
DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will not boot up.
We recommend that you use a PSU with higher power output when configuring a system with more power-consuming devices or when you intend to install additional devices. The system may become unstable or may not boot up if the power is inadequate.
If you are uncertain about the minimum power supply requirement for your system, refer to the Recommended Power Supply Wattage Calculator at http://support.asus. com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
A55M-E ATX power connectors
GND +5 Volts +5 Volts +5 Volts -5 Volts GND GND GND PSON# GND -12 Volts +3 Volts
+3 Volts +12 Volts +12 Volts
+5V Standby Power OK
GND +5 Volts
GND +5 Volts
GND +3 Volts +3 Volts
ASUS A55M-E 1-17
3. Serial ATA 3.0 Gb/s connectors (7-pin SATA3G 1~4) These connectors are for the Serial ATA 3.0 Gb/s signal cables for Serial ATA hard disk drives and optical disc drives. If you installed Serial ATA hard disk drives, you can create a RAID 0, RAID 1, or RAID 10 configuration through the onboard controller.
These connectors are set to AHCI mode by default. If you intend to create a Serial ATA RAID set using these connectors, set the type of the SATA connectors in the BIOS to [RAID]. See section 2.5.2 SATA Configuration for details.
You must install Windows XP Service Pack 3 or later version before using Serial ATA hard disk drives. The Serial ATA RAID feature is available only if you are using Windows XP SP3 or later version.
When using hot-plug and NCQ, set the type of the SATA connectors in the BIOS to [AHCI]. See section 2.5.2 SATA Configuration for details.
A55M-E SATA 3.0Gb/s connectors
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4. System panel connector (10-1 pin PANEL) This connector supports several chassis-mounted functions.
System power LED (2-pin PLED) This 2-pin connector is for the system power LED. Connect the chassis power LED cable to this connector. The system power LED lights up when you turn on the system power, and blinks when the system is in sleep mode.
Hard disk drive activity LED (2-pin HD_LED) This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable to this connector. The IDE LED lights up or flashes when data is read from or written to the HDD.
ATX power button/soft-off button (2-pin PWRBTN) This 2-pin connector is for the system power button.
Reset button (2-pin RESET) This 2-pin connector is for the chassis-mounted reset button for system reboot without turning off the system power.
A55M-E System panel connector
5. Speaker connector (4-pin SPEAKER) The 4-pin connector is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings.
A55M-E Speaker Out Connector
ASUS A55M-E 1-19
6. Digital audio connector (4-1 pin SPDIF_OUT) This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.
The S/PDIF module is purchased separately.
We recommend that you connect a high-definition front panel audio module to this connector to avail of the motherboard high-definition audio capability.
If you want to connect a high definition front panel audio module to this connector, set the Front Panel Type item in the BIOS to [HD]. See section 2.5.5 Onboard Devices Configuration for details.
The front panel audio I/O module is purchased separately.
7. Front panel audio connector (10-1 pin AAFP) This connector is for a chassis-mounted front panel audio I/O module that supports either High Definition Audio or AC`97 audio standard. Connect one end of the front panel audio I/O module cable to this connector.
A55M-E Digital audio connector
A55M-E Front panel audio connector
HD-audio-compliant pin definition
ut _R N
Legacy AC97 compliant definition
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8. USB 2.0 connectors (10-1 pin USB56, USB78) These connectors are for USB 2.0 ports. Connect the USB module cable to any of these connectors, then install the module to a slot opening at the back of the system chassis. These USB connectors comply with USB 2.0 specification that supports up to 480Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!
The USB 2.0 module is purchased separately.
9. Serial port connector (10-1 pin COM) This connector is for a serial (COM) port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis.
The COM module is purchased separately.
A55M-E Serial port (COM1) connector
RT S RI
A55M-E PIN 1
PIN 1 U
A55M-E USB2.0 connectors
ASUS A55M-E 1-21
1.8 Software support 1.8.1 Installing an operating system This motherboard supports 32-bit Windows XP, 32-bit/64-bit Windows Vista, 32-bit/64-bit Windows 7, and 32-bit/64-bit Windows 8 Operating Systems (OS). Always install the latest OS version and corresponding updates to maximize the features of your hardware.
Motherboard settings and hardware options vary. Refer to your OS documentation for detailed information.
Ensure that you install Windows XP Service Pack 3 or later versions / Windows Vista Service Pack 1 or later versions before installing the drivers for better compatibility and system stability.
1.8.2 Support DVD information The Support DVD that comes with the motherboard package contains the drivers, software applications, and utilities that you can install to avail all motherboard features.
If Autorun is NOT enabled in your computer, browse the contents of the Support DVD to locate the file ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run the DVD.
The following screen is for reference only.
The contents of the Support DVD are subject to change at any time without notice. Visit the ASUS website at www.asus.com for updates.
To run the Support DVD Place the Support DVD into the optical drive. If Autorun is enabled in your computer, the DVD automatically displays the Specials screen which contains the unique features of ASUS motherboard. Click Drivers, Utilities, Make Disk, Manual, and Contact tabs to display their respective menus.
Click an item to install
Click an icon to display Support DVD/motherboard information
ASUS A55M-E 2-1
2.1 Managing and updating your BIOS
Save a copy of the original motherboard BIOS file to a USB flash disk in case you need to restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update utility.
2.1.1 ASUS Update utility The ASUS Update is a utility that allows you to manage, save, and update the motherboard BIOS in Windows environment.
ASUS Update requires an Internet connection either through a network or an Internet Service Provider (ISP).
This utility is available in the support DVD that comes with the motherboard package.
Installing ASUS Update To install ASUS Update:
1. Place the support DVD in the optical drive. The Specials menu appears.
2. Click the Utilities tab, then click AI Suite II.
3. Follow the onscreen instructions to complete the installation.
Quit all Windows applications before you update the BIOS using this utility.
Updating the BIOS To update the BIOS:
1. From the Windows desktop, click Start > Programs > ASUS > AI Suite II > AI Suite II X.XX.XX to launch the AI Suite II utility. The AI Suite II Quick Bar appears.
2. Click Update button from the Quick Bar, and then click ASUS Update from the popup menu. The ASUS Update main screen appears. From the list, select either of the following methods:
Updating from the Internet
a. Select Update BIOS from the Internet, then click Next.
b. Select the ASUS FTP site nearest you to avoid network traffic, then click Next.
c. From the FTP site, select the BIOS version that you wish to download then click Next.
BIOS information 2
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The ASUS Update utility is capable of updating itself through the Internet. Always update the utility to avail all its features.
Updating from a BIOS file
a. Select Update BIOS from file, then click Next.
b. Locate the BIOS file from the Open window, then click Open.
3. Follow the onscreen instructions to complete the updating process.
2.1.2 ASUS EZ Flash 2 The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based utility.
Before you start using this utility, download the latest BIOS file from the ASUS website at www.asus.com.
To update the BIOS using EZ Flash 2:
1. Insert the USB flash disk that contains the latest BIOS file to the USB port.
2. Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select ASUS EZ Flash 2 Utility and press
4. Press the Up/Down arrow keys to find the USB flash disk that contains the latest BIOS, and then press
6. Press the Up/Down arrow keys to find the BIOS file, and then press
This function supports USB flash disks with FAT 32/16 format and single partition only.
DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure!
2.1.3 ASUS CrashFree BIOS 3 utility The ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS file using the motherboard support DVD or a USB flash drive that contains the updated BIOS file.
ASUS A55M-E 2-3
Before using this utility, rename the BIOS file in the removable device into A55ME.CAP.
The BIOS file in the support DVD may not be the latest version. Download the latest BIOS file from the ASUS website at www.asus.com.
Recovering the BIOS To recover the BIOS:
1. Turn on the system.
2. Insert the support DVD to the optical drive or the USB flash drive that contains the BIOS file to the USB port.
3. The utility automatically checks the devices for the BIOS file. When found, the utility reads the BIOS file and enters ASUS EZ Flash 2 utility automatically.
4. The system requires you to enter BIOS Setup to recover BIOS setting. To ensure system compatibility and stability, we recommend that you press
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause system boot failure!
2.1.4 ASUS BIOS Updater The ASUS BIOS Updater allows you to update BIOS in DOS environment. This utility also allows you to copy the current BIOS file that you can use as a backup when the BIOS fails or gets corrupted during the updating process.
The succeeding utility screens are for reference only. The actual utility screen displays may not be same as shown.
Before updating BIOS 1. Prepare the motherboard support DVD and a USB flash drive in FAT32/16 format and
2. Download the latest BIOS file and BIOS Updater from the ASUS website at http://support.asus.com and save them on the USB flash drive.
NTFS is not supported under DOS environment. Do not save the BIOS file and BIOS Updater to a hard disk drive or USB flash drive in NTFS format.
3. Turn off the computer and disconnect all SATA hard disk drives (optional).
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3. When the Make Disk menu appears, select the FreeDOS command prompt item by pressing the item number.
4. At the FreeDOS prompt, type d: and press
Updating the BIOS file To update the BIOS file using BIOS Updater:
1. At the FreeDOS prompt, type bupdater /pc /g and press
2. The BIOS Updater screen appears as below.
ASUSTek BIOS Updater for DOS V1.30
BOARD: A55M-E VER: 0301 DATE: 08/03/2013
A55ME.CAP 4194304 2013-03-08 17:30:48
Booting the system in DOS environment 1. Insert the USB flash drive with the latest BIOS file and BIOS Updater to the USB port.
2. Boot your computer. When the ASUS Logo appears, press
ASUS A55M-E 2-5
4. Select Yes and press
DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure!
For BIOS Updater version 1.30 or later, the utility automatically exits to the DOS prompt after updating BIOS.
Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu. Refer to section 2.9 Exit menu for details.
Ensure to connect all SATA hard disk drives after updating the BIOS file if you have disconnected them.
2.2 BIOS setup program Use the BIOS Setup program to update the BIOS or configure its parameters. The BIOS screens include navigation keys and brief online help to guide you in using the BIOS Setup program.
Entering BIOS Setup at startup To enter BIOS Setup at startup:
Entering BIOS Setup after POST To enter BIOS Setup after POST:
simultaneously. Press the reset button on the system chassis. Press the power button to turn the system off then back on. Do this option only if you failed to enter BIOS Setup using the first two options.
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Using the power button, reset button, or the
keys to force reset from a running operating system can cause damage to your data or system. We recommend to always shut down the system properly from the operating system.
The BIOS setup screens shown in this section are for reference purposes only, and may not exactly match what you see on your screen.
Visit the ASUS website at www.asus.com to download the latest BIOS file for this motherboard.
Ensure that a USB mouse is connected to your motherboard if you want to use the mouse to control the BIOS setup program.
If the system becomes unstable after changing any BIOS setting, load the default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu. See section 2.9 Exit Menu for details.
If the system fails to boot after changing any BIOS setting, try to clear the CMOS and reset the motherboard to the default value. See section 1.7 Jumpers for information on how to erase the RTC RAM.
BIOS menu screen The BIOS setup program can be used under two modes: EZ Mode and Advanced Mode. You can change modes from the Exit menu or from the Exit/Advanced Mode button in the EZ Mode/Advanced Mode screen.
EZ Mode By default, the EZ Mode screen appears when you enter the BIOS setup program. The EZ Mode provides you an overview of the basic system information, and allows you to select the display language, system performance mode and boot device priority. To access the Advanced Mode, click Exit/Advanced Mode, then select Advanced Mode.
The default screen for entering the BIOS setup program can be changed. Refer to the Setup Mode item in section 2.7 Boot menu for details.
ASUS A55M-E 2-7
The boot device options vary depending on the devices you installed to the system.
The Boot Menu(F8) button is available only when the boot device is installed to the system.
Exits the BIOS setup program without saving the changes, saves the changes and resets the system, or enters the Advanced Mode
Selects the display language of the BIOS setup program
Displays the CPU/motherboard temperature, CPU/5V/3.3V/12V voltage output, CPU/chassis fan speed
Power Saving mode
Normal mode ASUS Optimal mode
Loads optimized default Selects the boot device priority
Selects the boot device priorityDisplays the system properties of the selected mode on the right hand side
Selects the Advanced mode functions
Displays the Advanced mode menus
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Advanced Mode The Advanced Mode provides advanced options for experienced end-users to configure the BIOS settings. The figure below shows an example of the Advanced Mode. Refer to the following sections for the detailed configurations.
To access the EZ Mode, click Exit, then select ASUS EZ Mode.
Menu bar The menu bar on top of the screen has the following main items:
Main For changing the basic system configuration Ai Tweaker For changing the overclocking settings Advanced For changing the advanced system settings Monitor For displaying the system temperature, power status, and changing the Boot For changing the system boot configuration Tool For configuring options for special functions Exit For selecting the exit options and loading default settings
General helpMenu bar
Configuration fieldsMenu items
ASUS A55M-E 2-9
2.3 Main menu The Main menu screen appears when you enter the Advanced Mode of the BIOS Setup program. The Main menu provides you an overview of the basic system information, and allows you to set the system date, time, language, and security settings.
If you have forgotten your BIOS password, erase the CMOS Real Time Clock (RTC) RAM to clear the BIOS password. See section 1.7 Jumpers for information on how to erase the RTC RAM.
The Administrator or User Password items on top of the screen show the default Not Installed. After you set a password, these items show Installed.
2.4 Ai Tweaker menu The Ai Tweaker menu items allow you to configure overclocking-related items.
Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect field values can cause the system to malfunction.
The configuration options for this section vary depending on the CPU and DIMM model you installed on the motherboard.
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Scroll down to display the following items:
ASUS A55M-E 2-11
2.5 Advanced menu The Advanced menu items allow you to change the settings for the CPU and other system devices.
Be cautious when changing the settings of the Advanced menu items. Incorrect field values can cause the system to malfunction.
2.6 Monitor menu The Monitor menu displays the system temperature/power status, and allows you to change the fan settings.
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2.7 Boot menu The Boot menu items allow you to change the system boot options.
Scroll down to display the following items:
ASUS A55M-E 2-13
2.8 Tools menu The Tools menu items allow you to configure options for special functions. Select an item then press
2.9 Exit menu The Exit menu items allow you to load the optimal default values for the BIOS items, and save or discard your changes to the BIOS items. You can access the EZ Mode from the Exit menu.
Notices Federal Communications Commission Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
This device may not cause harmful interference. This device must accept any interference received including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with manufacturers instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required to assure compliance with FCC regulations. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the users authority to operate this equipment.
IC: Canadian Compliance Statement Complies with the Canadian ICES-003 Class B specifications. This device complies with RSS 210 of Industry Canada. This Class B device meets all the requirements of the Canadian interference-causing equipment regulations. This device complies with Industry Canada license exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Cut appareil numrique de la Classe B est conforme la norme NMB-003 du Canada. Cet appareil numrique de la Classe B respecte toutes les exigences du Rglement sur le matriel brouilleur du Canada. Cet appareil est conforme aux normes CNR exemptes de licence dIndustrie Canada. Le fonctionnement est soumis aux deux conditions suivantes : (1) cet appareil ne doit pas provoquer dinterfrences et (2) cet appareil doit accepter toute interfrence, y compris celles susceptibles de provoquer un fonctionnement non souhait de lappareil.
Canadian Department of Communications Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. This class B digital apparatus complies with Canadian ICES-003.
VCCI: Japan Compliance Statement
VCCI Class B Statement
KC: Korea Warning Statement
REACH Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) regulatory framework, we published the chemical substances in our products at ASUS REACH website at http://csr.asus.com/english/REACH.htm.
DO NOT throw the motherboard in municipal waste. This product has been designed to enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin indicates that the product (electrical and electronic equipment) should not be placed in municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol of the crossed out wheeled bin indicates that the battery should not be placed in municipal waste.
ASUS Recycling/Takeback Services ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for you to be able to responsibly recycle our products, batteries, other components as well as the packaging materials. Please go to http://csr.asus.com/english/Takeback.htm for detailed recycling information in different regions.
ASUS contact information
ASUSTeK COMPUTER INC. Address 15 Li-Te Road, Peitou, Taipei, Taiwan 11259 Telephone +886-2-2894-3447 Fax +886-2-2890-7798 E-mail firstname.lastname@example.org Web site www.asus.com.tw
Technical Support Telephone +86-21-38429911 Online support support.asus.com
ASUS COMPUTER INTERNATIONAL (America) Address 800 Corporate Way, Fremont, CA 94539, USA Telephone +1-812-282-3777 Fax +1-510-608-4555 Web site usa.asus.com
Technical Support Telephone +1-812-282-2787 Support fax +1-812-284-0883 Online support support.asus.com
ASUS COMPUTER GmbH (Germany and Austria) Address Harkort Str. 21-23, D-40880 Ratingen, Germany Fax +49-2102-959911 Web site www.asus.de Online contact www.asus.de/sales
Technical Support Telephone +49-1805-010923* Support Fax +49-2102-9599-11 Online support support.asus.com
* EUR 0.14/minute from a German fixed landline; EUR 0.42/minute from a mobile phone.
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