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.
DO NOT throw the motherboard in municipal waste. This product has been designed to enable proper reuse of pats 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 iindicates that the battery should not be placed in municipal waste.

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About this guide

This user guide contains the information you need when installing and configuring the motherboard.
How this guide is organized
This manual contains the following parts: This chapter describes the motherboard features and the new technologies it supports. It also lists the hardware setup procedures that you have to perform when installing system components. It includes description of the jumpers and connectors on the motherboard. This chapter tells how to change system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided. This chapter describes the contents of the support DVD that comes with the motherboard package. Chapter 3: Software support Chapter 2: BIOS setup Chapter 1: Product introduction
Where to find more information
Refer to the following sources for additional information and for product and software updates. 1. The ASUS website provides updated information on ASUS hardware and software products. Refer to the ASUS contact information. 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. Optional documentation ASUS websites

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Conventions used in this guide
To make sure 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. Used to emphasize a word or a phrase. Keys enclosed in the less-than and greater-than sign means that you must press the enclosed key. Example: <Enter> means that you must press the Enter or Return key. <Key1>+<Key2>+<Key3> If you must press two or more keys simultaneously, the key names are linked with a plus sign (+). Example: <Ctrl+Alt+D> Command Means that you must type the command exactly as shown, then supply the required item or value enclosed in brackets. Example: At the DOS prompt, type the command line: afudos /i[filename] afudos /iP5QEMDO.ROM

ASUS Exclusive Overclocking Features
Other Features BIOS Features Manageability Back Panel I/O Ports

Internal Connectors

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Support DVD Contents
Drivers ASUS PC Probe II ASUS Update Intel System Defense Utility Anti-virus software (OEM version) Intel IT Director microATX form factor: 9.6 x 9.6 (24.4 cm x 24.4 cm)

Form Factor

*Specifications are subject to change without notice.

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This chapter describes the motherboard features and the new technologies it supports. It also lists the hardware setup procedures that you have to perform when installing system components. It includes description of the jumpers and connectors on the motherboard.
Chapter1: Product introduction

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Chapter summary
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10
Welcome!.... 1-1 Package contents.... 1-1 Special features... 1-1 Before you proceed... 1-5 Motherboard overview... 1-6. Central Processing Unit (CPU)... 1-8 System memory... 1-13 Expansion slots... 1-20 Jumper... 1-24 Connectors... 1-26

ASUS P5Q-EM DO

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Welcome!

Thank you for buying an ASUS P5Q-EM DO motherboard!
The motherboard delivers a host of new features and latest technologies, making it another standout in the long line of ASUS quality motherboards! Before you start installing the motherboard, and hardware devices on it, check the items in your package with the list below.

Package contents

Check your motherboard package for the following items.

Motherboard Cables

Accessories
Application DVD Documentation
I/O shield 1 x ASUS 3 in 1 Q-Connector Kit (USB, 1394, system panel; Retail version only) ASUS motherboard support DVD User guide
Serial ATA power and signal cables for 2 devices 1 x Ultra DMA 133/100/66 cable
If any of the above items is damaged or missing, contact your retailer.

Special features

Product highlights

Green ASUS

This motherboard and its packaging comply with the European Unions Restriction on the use of Hazardous Substances (RoHS). This is in line with the ASUS vision of creating environment-friendly and recyclable products/packaging to safeguard consumers health while minimizing the impact on the environment.

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Intel Core2 Extreme / Core 2 Quad / Core2 Duo Processor Support
This motherboard supports the latest Intel Core 2 Extreme / Core 2 Quad / Core 2 Duo processors in the LGA775 package. It is excellent for multi-tasking, multi-media and enthusiastic gamers with 1333 / 1066 / 800 MHz FSB. The Intel Core 2 series processor is one of the most powerful CPUs in the world. This motherboard also supports Intel CPUs in the new 45nm manufacturing process.

Intel Q45 Express Chipset
The Intel Q45 Express Chipset is the latest chipset designed to support Intel new 45nm CPU, 16GB of dual-channel DDR2 800/667 architecture, 1333/1066/800 FSB (Front Side Bus), PCI Express 1.0/2.0 graphics and multi-core CPU.

Intel vPro Technology

The Intel vPro Technology allows IT organizations to remotely manage corporate PCs, even when they are powered off or with non-functional operating systems. It features the Intel Active Management Technology and offers IT organizations a lighter-weight form of virtualization to audit all Intel AMT-based platforms in a network environment. PCs with Intel vPro Technology allow IT departments to remotely retrieve assets and hardware/software inventories, contain security threats, resolve system problems, and increase the uptime of desktops with lower maintenance costs. To enable the Intel vPro Technology, first enable the related vPro Technology settings.

DDR2 mem ory support

The motherboard supports DDR2 memory that features data transfer rates of 800/667 MHz to meet the higher bandwidth requirements of the latest 3D graphics, multimedia, and Internet applications. The dual-channel DDR2 architecture doubles the bandwidth of your system memory to boost system performance, eliminating bottlenecks with peak bandwidths of up to 12.8 GB/s. Furthermore, this motherboard does not restrict the memory size across two channels. Users may install different memory size DIMMs into the two channels and enjoy dual-channel and single-channel functions at the same time. This new feature optimizes the use of available memory size. See page 113 for details.
Serial ATA 3.0 Gb/s technology
This motherboard supports the hard drives based on the Serial ATA (SATA) 3Gb/s storage specification, delivering enhanced scalability and doubling the bus bandwidth for high-speed data retrieval and saves. Easily backup photos, videos and other entertainment contents to external devices. See page 1-31 for details.

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Trusted Platform Module (TPM)
The Trusted Platform Module (TPM) provides enhanced data performance via high-level encryption/decryption, and ensures platform integrity. See page 2-29 for details.
Some third-party softwares may be requirred when running some functions of TPM.

IEEE 1394a support

The IEEE 1394a interface provides high speed digital interface for audio/video appliances such as digital television, digital video camcorders, storage peripherals & other PC portable devices. See page 1-29 for details.
S/PDIF digital sound ready

The motherboard supports the S/PDIF-out (SONY-PHILIPS Digtal Interface) function through the S/PDIF interface at mid-board. It allows to transfer digital audio without converting to analog format and keeps the best signal quality. See pages 1-28 for details.

High Definition Audio

Enjoy high-end sound quality on your PC! The onboard 8-channel High Definition Audio CODEC enables high-quality 192KHz/24-bit audio output, jack-sensing feature, and multistreaming technology that simultaneously sends different audio streams to different destinations. You can now talk to your partners on the headphone while playing multi-channel network games See page 1-34 for details.
ASUS Quiet Thermal Solution
ASUS Quiet Thermal solution makes system more stable and enhances the overclocking capability. ASUS Advanced Q-Fan technology The ASUS Advanced Q-Fan technology is powered by Intel Quiet System Technology; it makes the change of fan speed more smoothly. It is better in fan use, and efficiently reduce the noise caused by fanss abruptly speeding up. Moreover, Advanced Q-Fan has a better control over a constant temperature system environment.

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ASUS Crystal Sound
This feature can enhance speech-centric applications like Skype, online game, video conference and recording. Noise Filter This feature detects repetitive and stationary noises (non-voice signals) like computer fans, air conditioners, and other background noises then eliminates it in the incoming audio stream while recording.

ASUS EZ DIY

ASUS EZ DIY feature collection provides you easy ways to install computer components, update the BIOS or back up your favorite settings. ASUS Q-Connector
ASUS Q-Connector allows you to easily connect or disconnect the chassis front panel cables to the motherboard. This unique module eliminates the trouble of connecting the system panel cables one at a time and avoiding wrong cable connections. See page 1-36 for details. ASUS CrashFree BIOS 3
The ASUS CrashFree BIOS 3 allows users to restore corrupted BIOS data from a USB flash disk containing the BIOS file. See page 2-5 for details. ASUS EZ Flash 2 EZ Flash 2 is a user-friendly BIOS update utility. Simply press the predefined hotkey to launch the utility and update the BIOS without entering the OS. Update your BIOS easily without preparing a bootable diskette or using an OS-based flash utility. See page 2-22 and 2-36 for details.

ASUS Special Features

ASUS MyLogo2

SAMSUNG SAMSUNG SAMSUNG Super Talent Super Talent Transcend Transcend TwinMOS Aeneon Aeneon Asint Asint
HYS64T256020EU-3S-C2 2048MB M378T6553EZS-CE6 M378T2953EZ3-CE6 M378T5263AZ3-CE6 T6UA 512C5 T6UB1GC5 1024MB 4096MB 512MB 1024MB 1024MB 2048MB 512MB 512MB 512MB 512MB
A3R12E3JFF719A9THYB18T1GB00C2F-3S K4T51083QE K4T51083QE
SAMSUNG SAMSUNG SAMSUNG N/A N/A

K4T2G084QA-HCE6 Heat-Sink Package Heat-Sink Package TQ243ECF8 TQ243ECF8
JM667QLU-1G JM667QLU-2G 8D-23JK5M2ETP
Transcend Transcend TwinMOS AENEON AENEON Asint Asint
AET660UD00-30DB97X AET860UD00-30DB08X SLX264M8-J6E 26V2H8 N/A N/A SLY2128M8-J6E 26VOH8
TMM6208G8M30C AET93R300B AET03F30DB
2048MB 1024MB 1024MB 1024MB 1024MB 512MB 512MB
DDRII6408-6E DDRII1208-6E HY5PS12821CFP-Y5 HY5PS12821CFP-Y5 EPD2128082200E-4 EPD264082200E-4 18D 51280D-30648
CENTURY CENTURY Kingbox Kingbox MDT Patriot Patriot UMAX UMAX

Hynix Hynix N/A N/A N/A

N/A N/A N/A N/A N/A

M 512-667-8

PSDPSD21G6672 U2S12D30TP-6E U2S24D30TP-6E

1024MB 1024MB 2048MB

DS DS DS
PM64M8D2BU-3KC D46701GP3-63BJU

MDT Patriot UMAX UMAX

PM64M8D2BU-3PAC D46702GP0-73BCU
SS - Single-sided / DS - Double - sided DIMM support: A*: Supports one module inserted in any slot as Single-channel memory configuration. B*: Supports one pair of modules inserted into either the yellow slots or the black slots as one pair of Dual-channel memory configuration. C*: Supports four modules inserted into both the yellow and black slots as two pairs of Dual-channel memory configuration.
Visit the ASUS website for the latest DDR2- 800/667 MHz QVL.

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Installing a DIMM

Unplug the power supply before adding or removing DIMMs or other system components. Failure to do so can cause severe damage to both the motherboard and the components.
Press the retaining clips outward to unlock a DDR2 DIMM socket.
Align a DIMM on the socket such that the notch on the DIMM matches the break on the socket.

DDR2 DIMM notch

Unlocked retaining clip A DDR2 DIMM is keyed with a notch so that it fits in only one direction. DO NOT force a DIMM into a socket to avoid damaging the DIMM.
Firmly insert the DIMM into the socket until the retaining clips snap back in place and the DIMM is properly seated.

Locked retaining clip

Removing a DIMM
To remove a DIMM: Simultaneously press the retaining clips outward to unlock the DIMM.
Support the DIMM lightly with your fingers when pressing the retaining clips. The DIMM might get damaged when it flips out with extra force.
Remove the DIMM from the socket. 1-19

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IRQ assignments for this motherboard
HECI Host#1 IDE-R Controller KT Controller Thermal Controller VE AHCI Controller GbEthernet Controller 1394 (FW3227) LAN (8111C) Marvell 6102 PCIEX16_1 PCIEX1_1 PCIEX1_2 PCI1 USB controller 1 USB controller 2 USB controller 3 USB controller 4 USB controller 5 USB controller 6 USB 2.0 controller 1 USB 2.0 controller 2 SATA controller 1 SATA controller 2 A B C D E shared shared shared shared shared shared shared shared shared shared shared shared shared shared shared shared shared shared shared shared F used G H used shared

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PCI slots

The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specifications. The figure shows a LAN card installed on a PCI slot.

PCI Express x1 slot

This motherboard supports PCI Express x1 network cards, SCSI cards and other cards that comply with the PCI Express specifications. The following figure shows a network card installed on the PCI Express x1 slot.

PCI Express x16 slot

This motherboard supports PCI Express x16 graphic cards that comply with the PCI Express specifications. The figure shows a graphics card installed on the PCI Express x16 slot.
PCI slot PCIe x1 slot PCIe 2.0 x16 slot PCIe x1 slot

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Jumper

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.
Clear RTC RAM (3-pin CLRTC)

Normal (Default)

Clear RTC

P5Q-EM DO Clear RTC RAM

To erase the RTC RAM 1. 2. 3. 4. Turn OFF the computer and unplug the power cord. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3 for about 510 seconds, then move the cap back to pins 1-2. Plug the power cord and turn ON the computer. Hold down the <Del> key during the boot process and enter BIOS setup to reenter 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 the CMOS clearance, 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 C.P.R. (CPU Parameter Recall) feature. Shut down and reboot the system so the BIOS can automatically reset parameter settings to default values. Due to the chipset behavior, AC power off is required to enable C.P.R. function. You must turn off and on the power supply or unplug and plug the power cord before rebooting the system.

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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).
USB device wake-up (3-pin USBPW1-4, USBPW5-8, USBPW9-12)

+5VSB (Default)

+5V (Default)
P5Q-EM DO USB Device Wake Up
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.

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1.10 Connectors

1.10.1

Rear panel connectors

Optical S/PDIF Out port. This port connects an external audio output device via an optical S/PDIF cable.
PS/2 mouse port (green). This port is for a PS/2 mouse.
ME Switch. Allows you to enable or disable the Intel ME function. Push the switch to ON/OFF labelled on the I/O Shield to enable/disable this function.
Disable the Intel ME function before updating BIOS.

4. 5. 6.

IEEE 1394a port. This 6-pin IEEE 1394a port provides high-speed connectivity for audio/video devices, storage peripherals, PCs, or portable devices. LAN (RJ-45) port. Supported by Intel 882567 LM Gigabit LAN controller, this port allows Gigabit connection to a Local Area Network (LAN) through a network hub. Refer to the table below for the LAN port LED indications. VGA port. This port is for a VGA monitor or other VGA-compatible devices.

LAN port LED indications

Status OFF Activity/Link LED No link Linked Description Status OFF Speed LED Description

ACT/LINK LED SPEED LED

ORANGE

BLINKING 7. 9.

Data activity

ORANGE GREEN

10 Mbps connection 1 Gbps connection

100 Mbps connection

LAN port
Center/Subwoofer port (orange). This port connects the center/subwoofer speakers. Rear Speaker Out port (black). This port connects the rear speakers in a 4-channel, 6-channel, or 8-channel audio configuration. Line In port (light blue). This port connects the tape, CD, DVD player, or other audio sources.

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10. Line Out port (lime). This port connects a headphone or a speaker. In 4-channel, 6channel, and 8-channel configuration, the function of this port becomes Front Speaker Out. 11. 12. Side Speaker Out port (gray). This port connects the side speakers in an 8-channel audio configuration.
Refer to the audio configuration table below for the function of the audio ports in 2, 4, 6, or 8-channel configuration.

USB+5V USB_P10USB_P10+ GND NC
USB+5V USB_P6USB_P6+ GND NC
USB+5V USB_P8USB_P8+ GND NC USB+5V USB_P7USB_P7+ GND
USB+5V USB_P11USB_P11+ GND

USB+5V USB_P9USB_P9+ GND

P5Q-EM DO USB2.0 connectors
Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!
You can connect the USB cable to ASUS Q-Connector (USB, blue) first, and then install the Q-Connector (USB) to the USB connector onboard.
The USB module is purchased separately.

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USB+5V USB_P5USB_P5+ GND

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CPU, chassis, and power fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN1, 3-pin PWR_FAN)
The fan connectors support cooling fans of 350 mA ~ 2000 mA (24 W max.) or a total of 1 A ~ 7 A (84 W max.) at +12V. Connect the fan cables to the fan connectors on the motherboard, making sure that the black wire of each cable matches the ground pin of the connector.
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!

Rotation +12V GND

P5Q-EM DO fan connectors
Only the 4-pin CPU_FAN connectors support the ASUS Advanced Q-Fan feature. This motherboard does not support 3-pin CPU fan.
This connector is for a chassis-mounted intrusion detection sensor or switch. The chassis intrusion sensor or switch sends a high-level signal to this connector when a chassis component is removed or replaced. The signal is then generated as a chassis intrusion event. By default , the pin labeled Chassis Signal and Ground are shorted with a jumper cap. Remove the jumper caps only when you intend to use the chassis intrusion detection feature.
Chassis intrusion connector (4-1 pin CHASSIS)

Chassis Signal GND

+5VSB_MB

CHASSIS

P5Q-EM DO Chassis intrusion connector

ASUS P5Q-EM DO 1-33

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10. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that supports either HD Audio or legacy AC`97 audio standard. Connect one end of the front panel audio I/O module cable to this connector.
GND PRESENCE# SENSE1_RETUR SENSE2_RETUR

AGND NC NC

HD-audio-compliant pin definition
PORT1 L PORT1 R PORT2 R SENSE_SEND PORT1 L
Legacy AC97 compliant definition
P5Q-EM DO Analog front panel connector We recommend that you connect a high-definition front panel audio module to this connector to avail of the motherboards high-definition audio capability. By default, this connector is set to [HD Audio]. If you want to connect a AC 97 front panel audio module to this connector, set the Front Panel Type item in the BIOS setup to [AC97]. See section 2.5.3 Onboard Device Configuration for details.

These connectors are for ATX power supply plugs. The power supply plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.

ATX12V

+12V DC +12V DC
ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
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 PIN 1 +5 Volts GND +5 Volts GND +3 Volts +3 Volts
P5Q-EM DO ATX power connectors For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum power of 400 W. Do not forget to connect the 4-pin ATX12V power plug; otherwise, the system will not boot.
Use of a PSU with a higher power output is recommended when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate.

GND GND

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MIC2 MICPWR Line out_R NC Line out_L

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12. System panel connector (20-8 pin PANEL) This connector supports several chassis-mounted functions.

PLED SPEAKER

PWR Ground

IDE_LED

IDE_LED+ IDE_LED-
* Requires an ATX power supply
P5Q-EM DO System panel connector
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 +IDE_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. System warning speaker (4-pin SPEAKER) This 4-pin connector is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings. ATX power button/soft-off button (2-pin PWRSW) This connector is for the system power button. Pressing the power button turns the system on or puts the system in sleep or soft-off mode depending on the BIOS settings. Pressing the power switch for more than four seconds while the system is ON turns the system OFF. 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.

LSI 1394 Controller [Enabled] Marvell IDE [Enabled]
Allows you to enable or disable the onboard 1394 controller. Configuration options: [Enabled] [Disabled] Allows you to enable or disable the onboard Marvell IDE controller. Configuration options: [Enabled] [Disabled]
Intel Onboard LAN Controller [Enabled]
Intel LAN Boot ROM [Disabled]
Allows you to enable or disable the onboard LAN controller. Configuration options: [Enabled] [Disabled] This item appears only when the Intel Onboard LAN Controller is enabled. Configuration options: [Enabled] [Disabled]

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Serial Port1 Address [3F8/IRQ4]
Allows you to select the Serial Port1 base address. Configuration options: [Disabled] [3F8/IRQ4] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]

USB Configuration

The items in this menu allows you to change the USB-related features. Select an item then press <Enter> to display the configuration options.
BIOS SETUP UTILITY Advanced USB Configuration Module Version - 2.24.3-13.4 USB Devices Enabled: 1 Mouse [Enabled] [Enabled] [HiSpeed] [Enabled] [Auto] USB Functions USB 2.0 Controller USB 2.0 Controller Mode BIOS EHCI Hand-off Legacy USB Support Options Disabled Enabled
Select Screen Select Item Change Option F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
The USB Devices Enabled item shows the auto-detected values. If no USB device is detected, the item shows None.

USB Functions [Enabled]

Allows you to enable or disable the USB Host Controllers. Configuration options: [Disabled] [Enabled]
The following items appear only when you set USB Functions to [Enabled].
USB 2.0 Controller [Enabled]
Allows you to enable or disable the USB 2.0 controller. Configuration options: [Enabled] [Disabled]
The following item appears only when you enable the USB 2.0 Controller.
USB 2.0 Controller Mode [HiSpeed]
Allows you to set the USB 2.0 controller mode to HiSpeed (480 Mbps) or FullSpeed (12 Mbps). Configuration options: [FullSpeed] [HiSpeed]

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Legacy USB Support [Auto]
Allows you to enable or disable the support for legacy USB devices. Setting to [Auto] allows the system to detect the presence of USB devices at startup. If detected, the USB controller legacy mode is enabled. If no USB device is detected, the legacy USB support is disabled. Configuration options: [Disabled] [Enabled] [Auto]
BIOS EHCI Hand-off [Enabled]
Allows you to enable the support for operating systems without an EHCI handoff feature. Configuration options: [Disabled] [Enabled]

Chassis Fan Speed [xxxxRPM] or [Ignored] / [N/A]
The onboard hardware monitor automatically detects and displays the chassis fan speed in rotations per minute (RPM). If the fan is not connected to the motherboard, the field shows N/A.
Power Fan Speed [xxxxRPM] or [Ignored] / [N/A]
The onboard hardware monitor automatically detects and displays the power fan speed in rotations per minute (RPM). If the fan is not connected to the motherboard, the field shows N/A.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage ASUS Advanced Q-Fan Control

Fan Profile

The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators. Select [Ignored] if you do not wish to display these items.
Allows you to select the fan profile. Configuration options: [Disabled] [Performance] [Optimal] [Silent] [Ultra Silent].
The option of Ultra Silent is for Intel Core2 processors only.

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Boot menu
The Boot menu items allow you to change the system boot options. Select an item then press <Enter> to display the sub-menu.
Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot Tools Exit
Boot Settings Boot Device Priority Boot Settings Configuration Security
Specifies the Boot Device Priority sequence. A virtual floppy disk drive (Floppy Drive B:) may appear when you set the CD-ROM drive as the first boot device. Enter F1 F10 ESC Select Screen Select Item Go to Sub Screen General Help Save and Exit Exit

Boot Device Priority

BIOS SETUP UTILITY Boot Specifies the boot sequence from the availabe devices. A device enclosed in parenthesis has been disabled in the corresponding menu.
Boot Device Priority 1st Boot Device [1st FLOPPY DRIVE] 2nd Boot Device [Hard Drive] 3rd Boot Device [ATAPI CD-ROM]
1st ~ xxth Boot Device [xxx Drive]
These items specify the boot device priority sequence from the available devices. The number of device items that appears on the screen depends on the number of devices installed in the system. Configuration options: [xxx Drive] [Disabled]

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Exit menu

The Exit menu items allow you to load the optimal or failsafe default values for the BIOS items, and save or discard your changes to the BIOS items.
Main Advanced Power BIOS SETUP UTILITY Boot Tools Exit Exit system setup after saving the changes. F10 key can be used for this operation.
Exit Options Exit & Save Changes Exit & Discard Changes Discard Changes Load Setup Defaults
Pressing <Esc> does not immediately exit this menu. Select one of the options from this menu or <F10> from the legend bar to exit.

Exit & Save Changes

Once you are finished making your selections, choose this option from the Exit menu to ensure the values you selected are saved to the CMOS RAM. An onboard backup battery sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this option, a confirmation window appears. Select OK to save changes and exit.
If you attempt to exit the Setup program without saving your changes, the program prompts you with a message asking if you want to save your changes before exiting. Press <Enter> to save the changes while exiting.
Exit & Discard Changes
Select this option only if you do not want to save the changes that you made to the Setup program. If you made changes to fields other than System Date, System Time, and Password, the BIOS asks for a confirmation before exiting.

Discard Changes

This option allows you to discard the selections you made and restore the previously saved values. After selecting this option, a confirmation appears. Select OK to discard any changes and load the previously saved values.

Load Setup Defaults

This option allows you to load the default values for each of the parameters on the Setup menus. When you select this option or if you press <F5>, a confirmation window appears. Select OK to load default values. Select Exit & Save Changes or make other changes before saving the values to the non-volatile RAM.

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2.10 Intel ME configuration
This function allows you to configure the Intel Management Engine (ME) settings.
Ensure that the ME function is enabled before configuring the settings. To enable the ME function, refer to pages 1-26 and 2-24 for details.
To open the Intel ME Setup
The following screen appears after the Power-On-Self-Test (POST). Press <Ctrl> + P to launch the Intel ME Setup screen.