M4N68T-M
Motherboard
E5215
First Edition V1
November 2009
Copyright © 2009 ASUSTeK Computer Inc. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK Computer Inc. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
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DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
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DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
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Offer to Provide Source Code of Certain Software
This product may contain copyrighted software that is licensed under the General Public License (“GPL”)
and under the Lesser General Public License Version (“LGPL”). The GPL and LGPL licensed code in this
product is distributed without any warranty. Copies of these licenses are included in this product.
You may obtain the complete corresponding source code (as dened in the GPL) for the GPL Software,
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including the GPL Software and/or LGPL Software, which will be no earlier than December 1, 2011, either
(1) for free by downloading it from http://support.asus.com/download;
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In your request please provide the name, model number and version, as stated in the About Box of the
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product and describing the problem (please do NOT send large attachments such as source code archives
etc to this email address).
ii
Contents
Notices ......................................................................................................... vi
Safety information ..................................................................................... vii
About this guide ........................................................................................ vii
M4N68T-M specications summary .......................................................... ix
Chapter: Product introduction
1.1 Welcome! ...................................................................................... 1-1
1.2 Package contents ......................................................................... 1-1
1.3 Special features ............................................................................ 1-1
1.3.1 Product highlights ........................................................... 1-1
1.3.2 Innovative ASUS features ............................................... 1-3
1.4 Before you proceed ..................................................................... 1-5
1.5 Motherboard overview ................................................................. 1-6
1.5.1 Placement direction ........................................................ 1-6
1.5.2 Screw holes .................................................................... 1-6
1.5.3 Motherboard layout ......................................................... 1-7
1.5.4 Layout contents ............................................................... 1-7
1.6 Central Processing Unit (CPU) ................................................... 1-8
1.6.1 Installing the CPU ........................................................... 1-8
1.6.2 Installing the heatsink and fan ...................................... 1-10
1.7 System memory ......................................................................... 1-11
1.7.1 Overview ........................................................................1-11
1.7.2 Memory congurations .................................................. 1-12
1.7.3 Installing a DIMM .......................................................... 1-16
1.7.4 Removing a DIMM ........................................................ 1-16
1.8 Expansion slots .......................................................................... 1-17
1.8.1 Installing an expansion card ......................................... 1-17
1.8.2 Conguring an expansion card ..................................... 1-17
1.8.3 PCI slots ........................................................................ 1-17
1.8.4 PCI Express x1 slot ....................................................... 1-17
1.8.5 PCI Express x16 slot ..................................................... 1-17
1.9 Jumpers ...................................................................................... 1-18
1.10 Connectors ................................................................................. 1-20
1.10.1 Rear panel ports ........................................................... 1-20
1.10.2 Internal connectors ....................................................... 1-21
iii
Contents
1.11 Software support ........................................................................ 1-28
1.11.1 Installing an operating system ...................................... 1-28
1.11.2 Support DVD information .............................................. 1-28
Chapter: BIOS information
2.1 Managing and updating your BIOS ............................................ 2-1
2.1.1 ASUS Update utility ........................................................ 2-1
2.1.2 ASUS EZ Flash 2 utility ................................................... 2-2
2.1.3 ASUS CrashFree BIOS utility ......................................... 2-3
2.2 BIOS setup program .................................................................... 2-4
2.2.1 BIOS menu screen .......................................................... 2-5
2.2.2 Menu bar ......................................................................... 2-5
2.2.3 Navigation keys ............................................................... 2-5
2.2.4 Menu items ..................................................................... 2-6
2.2.5 Submenu items ............................................................... 2-6
2.2.6 Conguration elds ......................................................... 2-6
2.2.7 Pop-up window ............................................................... 2-6
2.2.8 Scroll bar ......................................................................... 2-6
2.2.9 General help ................................................................... 2-6
2.3 Main menu .................................................................................... 2-7
2.3.1 System Time ................................................................... 2-7
2.3.2 System Date ................................................................... 2-7
2.3.3 IDE Conguration ............................................................ 2-7
2.3.4 Primary IDE Master/Slave, SATA 1/2/3/4 ........................ 2-8
2.3.5 System Information ......................................................... 2-9
2.4 Advanced menu ........................................................................... 2-9
2.4.1 JumperFree Conguration .............................................. 2-9
2.4.2 CPU Conguration ........................................................ 2-12
2.4.3 Chipset .......................................................................... 2-12
2.4.4 Onboard Device Conguration ...................................... 2-14
2.4.5 PCIPnP ......................................................................... 2-14
2.4.6 USB Conguration ........................................................ 2-15
2.5 Power menu ................................................................................ 2-16
2.5.1 Suspend Mode .............................................................. 2-16
2.5.2 ACPI 2.0 Support .......................................................... 2-16
2.5.3 ACPI APIC Support ....................................................... 2-16
iv
Contents
2.5.4 APM Conguration ........................................................ 2-16
2.5.5 HW Monitor Conguration ............................................. 2-17
2.5.6 Anti Surge Support ........................................................ 2-17
2.6 Boot menu .................................................................................. 2-18
2.6.1 Boot Device Priority ...................................................... 2-18
2.6.2 Boot Settings Conguration .......................................... 2-18
2.6.3 Security ......................................................................... 2-19
2.7 Tools menu ................................................................................. 2-21
2.7.1 ASUS EZ Flash 2 .......................................................... 2-21
2.7.2 Express Gate ................................................................ 2-21
2.7.3 ASUS O.C. Prole ......................................................... 2-22
2.7.4 AI NET 2........................................................................ 2-22
2.8 Exit menu .................................................................................... 2-23
v
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, and
• 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 manufacturer’s 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 modications to this unit not
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
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.
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://green.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.
vi
Safety information
Electrical safety
•
To prevent electric shock hazard, disconnect the power cable from the electric 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 x it by yourself. Contact a qualied 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 that 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 qualied service
technician or your retailer.
About this guide
This user guide contains the information you need when installing and conguring 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.
vii
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 toInformation to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when trying toInformation 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.Tips and additional information to help you complete a task.
Where to nd 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 yers,
that may have been added by your dealer. These documents are not part of the
standard package.
Typography
Bol d te xt Indicates a menu or an item to select.Indicates a menu or an item to select.
Italics
Used to emphasize a word or a phrase.
<Key> 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>
viii
M4N68T-M specications summary
CPU AMD® Socket AM3 for AMD® Phenom™ II / Athlon™ II /
Chipset GeForce 7025 / nForce 630a
Front side bus 2000 / 1600 MT/s HyperTransport™ 1.0 interface
Memory Dual-channel memory architecture
Graphics Integrated Programmable Shader model 3.0 DirectX 9 GPU
Expansion slots 1 x PCIe x16 slot
Storage / RAID 1 x Ultra DMA 133/100 connector
LAN Gigabit LAN
Audio VIA VT1708S supports 8-channel* High Denition Audio
USB Supports up to 10 USB 2.0/1.1 ports (6 ports at mid-board,
Back panel I/O ports 1 x PS/2 Keyboard port
Sempron™ 100 series processors
AMD® Cool ‘n’ Quiet™ Technology
AMD 64 architecture enables simultaneous 32-bit and 64-bit
computing
* Refer to www.asus.com for the AMD® CPU support list
2 x 240-pin DIMM slots support maximum 8GB unbuffered
ECC and non-ECC DDR3 1800(O.C.) / 1600 (O.C.) /
1333 / 1066MHz memory modules
* Refer to www.asus.com for the latest Memory QVL
(Qualied Vendors List).
** When you install a total memory of 4GB 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.
Supports max. shared memory of 256MB
Supports RGB with max. resolution of 1920 x 1440 (@75Hz)
1 x PCIe x1 slot
2 x PCI slots
4 x Serial ATA 3Gb/s connectors support RAID 0, RAID 1,
RAID 0+1, RAID 5, and JBOD congurations
Supports Anti-pop function and Multi-streaming technologies
Supports S/PDIF_OUT interface
* Use the chassis with HD audio module in the front panel to
support 8-channel audio output.
4 ports at the back panel)
1 x PS/2 Mouse port
1 x LAN (RJ-45) port
1 x VGA port
1 x COM port
4 x USB 2.0/1.1 ports
1 x LPT port
3 x Audio jacks
(continued on the next page)
ix
M4N68T-M specications summary
Internal I/O connectors 3 x USB 2.0/1.1 connectors support additional
BIOS 8Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0,
ASUS special features ASUS EPU-4 Engine
ASUS overclocking
features
Accessories 2 x Serial ATA cables
Support DVD Drivers
Form factor MicroATX form factor: 9.6 in x 8.2 in (24.4 cm x 20.8 cm)
6 USB 2.0/1.1 ports
4 x SATA connectors
1 x CPU fan connector
1 x Chassis fan connector
1 x High denition front panel audio connector
1 x S/PDIF_OUT connector
1 x IDE connector
1 x Internal speaker connector
1 x System panel connector
1 x 24-pin ATX power connector
1 x 4-pin ATX 12V power connector
ACPI2.0a, SM BIOS 2.5
ASUS Express Gate
ASUS Anti-Surge
ASUS Q-Fan
ASUS CrashFree BIOS3
ASUS EZ Flash2
ASUS AI NET2
ASUS MyLogo2
ASUS Turbo Key
SFS (Stepless Frequency Selection)
- HT tuning from 200MHz to 550MHz at 1MHz increment
- PCIe frequency tuning from 100MHz up to 150MHz at
1MHz increment
ASUS C.P.R. (CPU Parameter Recall)
1 x Ultra DMA 133/100 cable
1 x I/O shield
1 x User Manual
ASUS Update
ASUS PC Probe II
Anti-Virus software (OEM version)
*Specications are subject to change without notice.
x
Chapter 1
Product introduction
1.1 Welcome!
Thank you for buying an ASUS® M4N68T-M 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.
1.2 Package contents
Check your motherboard package for the following items.
Motherboard ASUS M4N68T-M motherboard
Cables 2 x Serial ATA cables
1 x Ultra DMA 133/100 cable
Accessories 1 x I/O shield
Application DVD ASUS motherboard Support DVD
Documentation User Manual
If any of the above items is damaged or missing, contact your retailer.
1.3 Special features
1.3.1 Product highlights
AMD® Phenom™ II / Athlon™ II / Sempron™ 100 series CPU
ASUS M4N68T-M 1-1
support
This motherboard supports AMD® Socket AM3 multi-core processors with
unique L3 cache and delivers better overclocking capabilities with less
power consumption. It features dual-channel DDR3 memory support and
accelerates data transfer rate up to 2000MT/s via HyperTransport™
1.0-based system bus. This motherboard also supports AMD® CPUs in
the new 45nm manufacturing process.
AMD® Cool ‘n’ Quiet Technology
This motherboard supports the AMD® Cool ‘n’ Quiet technology which
monitors system operation and automatically adjusts CPU voltage and
frequency for a cool and quiet operating environment.
Dual-Channel DDR3 1800 (O.C.) support
This motherboard supports DDR3 memory that features data transfer
rates of 1800 (O.C.)/1600 (O.C.)/1333/1066 MHz to meet the higher
bandwidth requirements of the latest operating system, 3D graphics,
multimedia, and Internet applications.
Gigabit LAN solution
The onboard LAN controller is a highly integrated Gb LAN controller. It is
enhanced with an ACPI management function to provide efcient power
management for advanced operating systems.
Serial ATA 3Gb/s technology and RAID support
This motherboard supports hard drives based on the Serial ATA (SATA)
3Gb/s storage specication, delivering enhanced scalability and doubling
the bus bandwidth for high-speed data retrieval and save. It also supports
RAID 0, RAID 1, RAID 5, and RAID 0+1 congurations for Serial ATA
hard drives.
Enjoy high-end sound quality on your PC! The onboard 8-channel High
Denition Audio CODEC enables high-quality 192KHz/24-bit audio
output, jack-sensing feature, and multi-streaming 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.
Chapter 1: Product introduction1-2
1.3.2 Innovative ASUS features
ASUS Express Gate
ASUS Express Gate is an ASUS exclusive OS that provides you with
quick access to the Internet and key applications before entering the
Windows® OS.
• ASUS Express Gate supports installation on SATA HDDs, USB HDDs and ash
drives with at least 1.2GB free disk space. When installing it on USB HDDs or
ash drives, connect the drives to the motherboard USB port before turning on the
computer.
• The actual boot time depends on the system conguration.
• ASUS Express Gate supports le uploading from SATA HDDs, ODDs and USB
drives. It supports le downloading to USB drives only.
ASUS Turbo Key
ASUS Turbo Key allows you to turn the PC power button into
an overclocking button. After the easy setup, Turbo Key boosts
performances without interrupting ongoing work or games, simply through
pressing the button.
ASUS MyLogo2™
Turn your favorite photos into 256-color boot logos to personalize your
system.
ASUS CrashFree BIOS 3
ASUS CrashFree BIOS 3 is an auto-recovery tool that allows you to
restore a corrupted BIOS le using the bundled support DVD or a USB
ash disk that contains the BIOS le.
ASUS EZ Flash 2
ASUS EZ Flash 2 allows you to update the BIOS from a USB ash disk
before entering the OS.
ASUS Q-Fan
ASUS Q-Fan technology intelligently adjusts the CPU fan speed
according to system loading to ensure a quiet, cool, and efcient
operation.
ASUS M4N68T-M 1-3
ASUS Anti-Surge Protection
This special design prevents expensive devices and the motherboard
from damage caused by power surges from switching power supply
(PSU).
ASUS EPU
ASUS EPU is a unique power saving technology that detects the current
system loadings and adjusts the power consumption in real time.
ASUS AI NET2
ASUS AI NET2 remotely detects the cable connection immediately after
you turn on the system and any faulty cable connections are reported
back up to 100 meters at 1 meter accuracy.
C.P.R. (CPU Parameter Recall)
The BIOS C.P.R. feature automatically restores the CPU default settings
when the system hangs due to overclocking failure. C.P.R. eliminates the
need to open the system chassis and clear the RTC data. Simply shut
down and reboot the system, and the BIOS automatically restores the
CPU parameters to their default settings.
Green ASUS
This motherboard and its packaging comply with the European Union’s
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.
Chapter 1: Product introduction1-4
1.4 Before you proceed
SB_PWR
ON
Standby Power Powered Off
OFF
M4N68T-M
M4N68T-M Onboard LED
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, switch off the ATX power supply and
detach its power cord. Failure to do so may cause severe damage to the motherboard,
peripherals, or components.
Onboard 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.
ASUS M4N68T-M 1-5
M4N68T-M
1.5 Motherboard overview
1.5.1 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.
1.5.2 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.
Place this side towards
the rear of the chassis.
Chapter 1: Product introduction1-6
1.5.3 Motherboard layout
M4N68T-M
PCIEX16
PCIEX1_1
PCI1
PCI2
PRI_IDE
USB910
USB78USB56
AAFP
SPDIF_OUT
SPEAKER
ATX12V
EATXPWR
CPU_FAN
Lithium Cell
CMOS Power
Super
I/O
VIA
VT1708S
RTL
8211CL
KB/MS
COM1
LPT
8Mb
BIOS
SB_PWR
CLRTC
USBPW5-10
USBPW1-4
KBPWR
NVIDIA
®
MCP68 SE
SOCKET AM3
DDR3 DIMM_A1 (64bit, 240-pin module)
DDR3 DIMM_B1 (64bit, 240-pin module)
SATA1 SATA3
SATA2 SATA4
AUDIO
LAN1_USB12
USB34
CHA_FAN
F_PANEL
VGA
20.8cm(8.2in)
24.4cm(9.6in)
3 42 5
7
1 6
10111215 14 13
3
9
8
2
1.5.4 Layout contents
Connectors/Jumpers/Slots Page Connectors/Jumpers/Slots Page
1. Keyboard power (3-pin KBPWR) 1-19 9. Serial ATA connectors (7-pin SATA1-4) 1-24
2. USB device wake-up (3-pin USBPW1-4,
3. ATX power connectors (24-pin EATXPWR, 4-pin
4. CPU and chassis fan connectors (4-pin
5. AMD CPU socket 1-8 13. Onboard LED 1-5
USBPW5-10)
ATX12V)
CPU_FAN and 3-pin CHA_FAN)
6. DDR3 DIMM sockets 1-11 14. Digital audio connector (4-1 pin SPDIF_OUT) 1-27
7. IDE connector (40-1 pin PRI_IDE) 1-23 15. Front panel audio connector (10-1 pin AAFP) 1-21
8. Clear RTC RAM (CLRTC) 1-18
ASUS M4N68T-M 1-7
1-19 10. USB connectors (10-1 pin USB56, USB78,
USB910)
1-22 11. Internal speaker connector (4- pin SPEAKER) 1-24
1-27 12. System panel connector (10-1 pin F_PANEL) 1-25
1-26
1.6 Central Processing Unit (CPU)
M4N68T-M
M4N68T-M CPU socket AM3
This motherboard supports AMD® Phenom™ II / Athlon™ II / Sempron™ 100 series
processors.
The AM3 socket has a different pinout from the the AM2+/AM2 socket. Ensure that you use
a CPU designed for the AM3 socket.
1.6.1 Installing the CPU
To install a CPU:
1. Locate the CPU socket on the motherboard.
2. Press the lever sideways to unlock the
socket, then lift it up to a 90°-100° angle.
Ensure that the socket lever is lifted up to a 90°-100° angle; otherwise, the CPU will not t
in completely.
3. Position the CPU above the socket such that the CPU
corner with the gold triangle matches the socket corner
with a small triangle.
4. Carefully insert the CPU into the socket until it ts in place.
The CPU ts only in one correct orientation.
DO NOT force the CPU into the socket to
prevent bending the pins and damaging the
CPU!
Socket lever
Small triangle
Gold triangle
Chapter 1: Product introduction1-8
5. When the CPU is in place, push down the socket
CPU_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
M4N68T-M
M4N68T-M CPU fan connector
lever to secure the CPU. The lever clicks on the side
tab to indicate that it is locked.
6. Install a CPU heatsink and fan following the
instructions that comes with the heatsink package.
You can also refer to section 1.6.2 Installing
heatsink and fan for instructions.
7. Connect the CPU fan cable to the CPU_FAN connector on the motherboard.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.
ASUS M4N68T-M 1-9
1.6.2 Installing the heatsink and fan
1
3
4
5
2
Ensure that you use only AMD-certied heatsink and fan assembly.
To install the CPU heatsink and fan:
1. Place the heatsink on top of the installed CPU, ensuring that the heatsink ts properly
on the retention module base.
• The retention module base is already installed on the motherboard upon purchase.
• You do not have to remove the retention module base when installing the CPU or
installing other motherboard components.
• If you purchased a separate CPU heatsink and fan assembly, ensure that a Thermal
Interface Material is properly applied to the CPU heatsink or CPU before you install the
heatsink and fan assembly.
CPU Fan
CPU Heatsink
Retention bracket
Retention Module Base
Retention bracket lock
Your boxed CPU heatsink and fan assembly should come with installation instructions for
the CPU, heatsink, and the retention mechanism. If the instructions in this section do not
match the CPU documentation, follow the latter.
2. Attach one end of the retention bracket to the retention module base.
Chapter 1: Product introduction1-10
3. Align the other end of the retention bracket to the retention module base. A clicking
M4N68T-M
M4N68T-M 240-pin DDR3 DIMM sockets
DIMM_A1
DIMM_B1
sound denotes that the retention bracket is in place.
Ensure that the fan and heatsink assembly perfectly ts the retention mechanism module
base, otherwise you cannot snap the retention bracket in place.
4. Push down the retention bracket lock on the retention mechanism to secure the
heatsink and fan to the module base.
5. When the fan and heatsink assembly is in place, connect the CPU fan cable to the
connector on the motherboard labeled CPU_FAN.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.
1.7 System memory
1.7.1 Overview
The motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets. The gure illustrates the location of the DDR3 DIMM sockets:
Channel Sockets
Channel A DIMM_A1
Channel B DIMM_B1
ASUS M4N68T-M 1-11
1.7.2 Memory congurations
You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and 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 conguration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.
• Always install DIMMs with the same CAS latency. For optimum compatibility, we
recommend that you obtain memory modules from the same vendor.
• 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 WindowsInstall a maximum of 3GB system memory if you are using a 32-bit Windows
OS.
- Use a 64-bit WindowsWindows® OS if you want to install 4GB or more memory on the
motherboard.
• This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.
M4N68T-M Motherboard Qualied Vendors Lists (QVL)
DDR3-1800(O.C.)MHz capability
®
Vendor Part No. Size SS/DS Brand Chip NO.
Apacer 78.0AGCD.CDZ(XMP) 2048MB(Kit of 2) SS N/A Heat-Sink Package •
Corsair CM3X2G1800C8D 2048MB DS N/A Heat-Sink Package • •
Transcend TX1800KLU-2GK 1024MB SS N/A Heat-Sink Package • •
Timing
DIMM
(BIOS)
Voltage
DIMM Support
A* B*
DDR3-1600(O.C.)MHz capability
Vendor Part No. Size
A-Data AD31600X002GMU 4096MB(Kit of 2) DS N/A Heat-Sink Package 7-7-7-20 1.75-1.85V • •
Corsair CM3X1G1600C9DHX 2048MB(Kit of 2) SS N/A Heat-Sink Package 9-9-9-24 1.8V • •
Corsair CM3X2G1600C9DHX 2048MB DS N/A Heat-Sink Package • •
Corsair TR3X6G1600C8 G(XMP) 6144MB(Kit of 3 ) DS N/A Heat-Sink Package • •
Corsair TR3X6G1600C8D G(XMP) 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 8-8-8-24 1.65V • •
Corsair TR3X6G1600C9 G(XMP) 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 9-9-9-24 1.65V • •
Corsair TR3X6G1600C8D G(XMP) 6144MB(Kit of 3) DS N/A Heat-Sink Package 8-8-8-24 1.65V • •
Crucial BL12864BA1608.8SFB(XMP) 3072MB(Kit of 3) SS N/A Heat-Sink Package 8-8-8-24 1.8V •
Crucial BL12864BE2009.8SFB3(EPP) 3072MB(Kit of 3) SS N/A Heat-Sink Package 9-9-9-28 2.0V • •
Crucial BL25664BN1608.16FF(XMP) 6144MB(Kit of 3 ) DS N/A Heat-Sink Package • •
Crucial BL25664TB1608.K16SF(XMP) 6144MB(Kit of 3) DS N/A Heat-Sink Package 8-8-8-24 •
Crucial BL25664TG1608.K16SF(XMP) 6144MB(Kit of 3) DS N/A Heat-Sink Package 8-8-8-24 • •
Crucial BL25664TR1608.K16SF(XMP) 6144MB(Kit of 3) DS N/A Heat-Sink Package 8-8-8-24 • •
SS/
Brand Chip NO.
DS
continued on the next page
Timing DIMM
Chapter 1: Product introduction1-12
(BIOS)
Voltage
DIMM
Support
A* B*
DDR3-1600(O.C.) MHz capability
Vendor Part No. Size
G.SKILL F3-12800CL9D-2GBNQ 2048MB(Kit of 2) SS N/A Heat-Sink Package 9-9-9-24 1.5V~1.6V • •
G.SKILL F3-12800CL8T-6GBHK 2048MB DS N/A Heat-Sink Package 8-8-8-21 1.6~1.65 • •
G.SKILL F3-12800CL9T-6GBNQ 6144MB(Kit of 3) DS N/A Heat-Sink Package 9-9-9-24 1.5V~1.6V • •
Kingmax FLGD45F-B8KG9 1024MB SS KFB8FNGXF-
Kingmax FLGD45F-B8MF7 MAEH(XMP) 1024MB SS N/A Heat-Sink Package 7 • •
Kingmax FLGE85F-B8KG9 2048MB DS KFB8FNGXF-
Kingmax FLGE85F-B8MF7 MEEH(XMP) 2048MB DS N/A Heat-Sink Package 7 • •
Kingston KHX1600C9D3K2/4G 4096MB(kit of 2) DS N/A Heat-Sink Package 1.7-1.9V • •
Kingston KHX1600C9D3K3/6GX(XMP) 6144MB(Kit of 3) DS N/A Heat-Sink Package 1.65V • •
OCZ OCZ3G1600LV3GK 3072MB(Kit of 3) SS N/A Heat-Sink Package 8-8-8-24 1.65V • •
OCZ OCZ3G1600LV6GK 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 8-8-8-24 1.65V • •
Super Talent WA160UX6G9 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 9 • •
SS/
Brand Chip NO.
DS
ANX-12A
ANX-12A
Timing DIMM
(BIOS)
Voltage
• •
• •
DDR3-1333 MHz capability
DIMM
Support
A* B*
Voltage
1.85V
1.85V
DIMM
Support
A* B*
• •
• •
Vendor Part No. Size
A-Data AD31333001GOU 1024MB SS A-Data AD30908C8D-151C E0906 • •
A-Data AD31333G001GOU 3072MB(Kit of 3) SS N/A Heat-Sink Package 8-8-8-24 1.65-
A-Data AD31333002GOU 2048MB DS A-Data AD30908C8D-151C E0903 • •
A-Data AD31333G002GMU 2048MB DS N/A Heat-Sink Package 8-8-8-24 1.65-
Apacer 78.01GC6.9L0 1024MB SS Apacer AM5D5808AEWSBG0914E 9 • •
Apacer 78.A1GC6.9L1 2048MB DS Apacer AM5D5808AEWSBG0908D 9 • •
Corsair CM3X1024-1333C9DHX 1024MB SS N/A Heat-Sink Package 9-9-9-24 1.60V • •
Corsair CM3X1024-1333C9 1024MB SS N/A Heat-Sink Package • •
Corsair TR3X3G1333C9 G 3072MB(Kit of 3) SS N/A Heat-Sink Package 9-9-9-24 1.50V • •
Corsair TR3X3G1333C9 3072MB(Kit of 3) SS N/A Heat-Sink Package 9 1.5V • •
Corsair CM3X1024-1333C9DHX 1024MB DS Corsair Heat-Sink Package • •
Corsair CM3X2048-1333C9DHX 2048MB DS N/A Heat-Sink Package • •
Corsair TW3X4G1333C9 G 4096MB(Kit of 2) DS N/A Heat-Sink Package 9-9-9-24 1.50V • •
Crucial CT12864BA1339.8FF 1024MB SS Micron 9FF22D9KPT 9 • •
Crucial CT12872BA1339.9FF 1024MB SS Micron 91F22D9KPT(ECC) 9 • •
Crucial BL12864TA1336.8SFB1 2048MB(Kit of 2) SS N/A Heat-Sink Package 6-6-6-20 1.8V • •
Crucial CT12864BA1339.8SFD 3072MB(Kit of 3) SS Micron 8XD22D9JNM 9 • •
Crucial CT25664BA1339.16FF 2048MB DS Micron 9KF27D9KPT 9 • •
Crucial CT25672BA1339.18FF 2048MB DS Micron 91F22D9KPT(ECC) 9 • •
Crucial BL25664ABA1336.16SFB1 4096MB(Kit of 2) DS N/A Heat-Sink Package 6-6-6-20 1.8V • •
Crucial BL25664BA1336.16SFB1 4096MB(Kit of 2) DS N/A Heat-Sink Package 6-6-6-20 1.8V • •
Crucial BL25664BN1337.16FF
(XMP)
Crucial CT25664BA1339.16SFD 6144MB(Kit of 3 ) DS Micron 8UD22D9JNM 9 •
6144MB(Kit of 3 ) DS N/A Heat-Sink Package 7-7-7-24 1.65V • •
SS/
Brand Chip NO.
DS
Timing
DIMM
(BIOS)
(continued on the next page)
ASUS M4N68T-M 1-13
DDR3-1333MHz capability
Voltage
voltage)
DIMM
Support
A* B*
• •
Vendor Part No. Size
G.SKILL F3-10600CL8D-2GBHK 1024MB SS G.SKILL Heat-Sink Package •
G.SKILL F3-10600CL9D-2GBPK 1024MB SS G.SKILL Heat-Sink Package • •
G.SKILL F3-10666CL7T-3GBPK 3072MB(Kit of 3) SS N/A Heat-Sink Package 7-7-7-18 1.5~1.6V • •
G.SKILL F3-10666CL9T-3GBNQ 3072MB(Kit of 3) SS N/A Heat-Sink Package 9-9-9-24 1.5~1.6V • •
G.SKILL F3-10600CL7D-2GBPI 1024MB DS G.SKILL Heat-Sink Package • •
G.SKILL F3-10600CL9D-2GBNQ 1024MB DS G.SKILL Heat-Sink Package •
G.SkiLL F3-10666CL8D-4GBHK 4096MB(Kit of 2 ) DS N/A Heat-Sink Package 8-8-8-21 1.5-1.6V • •
G.SKILL F3-10666CL7T-6GBPK 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 7-7-7-18 1.5~1.6V • •
G.SKILL F3-10666CL9T-6GBNQ 6144MB(Kit of 3) DS N/A Heat-Sink Package 9-9-9-24 1.5V~1.6V • •
GEIL DDR3-1333 CL9-9-9-24 1024MB SS N/A Heat-Sink Package 9 • •
GEIL GV34GB1333C7DC 2048MB DS N/A Heat-Sink Package 7-7-7-24 1.5V • •
GEIL GG34GB1333C9DC 4096MB(Kit of 2) DS GEIL GL1L128M88BA12N 9-9-9-24 1.3V(low
GEIL DDR3-1333 CL9-9-9-24 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 9 1.5V • •
Kingmax FLFD45F-B8MH9 MAES 1024MB SS Micron 9CF22D9KPT • •
Kingmax FLFE85F-B8MF9 2048MB DS Micron 8HD22D9JNM • •
Kingmax FLFE85F-B8MH9 MEES 2048MB DS Micron 9GF27D9KPT • •
Kingston KVR1333D3N9/1G 1024MB SS Hynix H5TQ1G83BFR 9 1.5V • •
Kingston KVR1333D3N9/2G 2048MB DS Qimonda IDSH1G-03A1F1C-13H 1.5V • •
Micron MT8JTF12864AY-1G4D1 1024MB SS Micron 8LD22D9JNM • •
Micron MT8JTF12864AZ-1G4F1 1024MB SS Micron 9FF22D9KPT 9 • •
Micron MT9JSF 12872AZ-1G4F1 1024MB SS Micron 91F22D9KPT(ECC) 9 • •
Micron MT8JTF12864AY-1G4D1 3072MB(Kit of 3) SS Micron 8XD22D9JNM 9 • •
Micron MT12JSF25672AZ-1G4F1 2048MB DS Micron 91F22D9KPT(ECC) 9 • •
Micron MT16JTF25664AY-1G1D1 2048MB DS Micron 8LD22 D9JNM • •
Micron MT18JTF25664AZ-1G4F1 2048MB DS Micron 9KF27D9KPT 9 • •
Micron MT16JTF25664AY-1G4D1 6144MB(Kit of 3 ) DS Micron 8UD22D9JNM 9 • •
OCZ OCZ3X1333LV3GK(XMP) 3072MB(Kit of 3) SS N/A Heat-Sink Package 1.6V •
OCZ OCZ3G13334GK 4096MB(Kit of 2) DS N/A Heat-Sink Package 1.7V • •
OCZ OCZ3P13334GK 4096MB(Kit of 2) DS N/A Heat-Sink Package 7-7-7-20 1.8V • •
OCZ OCZ3G1333LV6GK 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 9-9-9-20 1.65V • •
OCZ OCZ3P1333LV6GK 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 7-7-7-20 1.65V • •
OCZ OCZ3X1333LV6GK(XMP) 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 8-8-8-20 1.60V • •
SAMSUNG M378B2873DZ1-CH9 1024MB SS Samsung K4B1G0846D-HCH9 • •
SAMSUNG M378B2873DZ1-CH9 1024MB SS Samsung SEC 846 HCH9 K4B1G08460 • •
SAMSUNG M378B2873EH1-CH9 1024MB SS Samsung SEC 913 HCH9 K4B1G0846E • •
SAMSUNG M391B2873DZ1-CH9 1024MB SS Samsung K4B1G0846D-HCH9(ECC) • •
SAMSUNG M378B5673DZ1-CH9 2048MB DS Samsung K4B1G0846D-HCH9 • •
SAMSUNG M378B5673EH1-CH9 2048MB DS Samsung SEC 913 HCH9 K4B1G0846E • •
SAMSUNG M391B5673DZ1-CH9 2048MB DS Samsung K4B1G0846D-HCH9(ECC) • •
Super Talent W1333X2GB8 1024MB SS N/A Heat-Sink Package • •
Transcend TS128MLK64V3U 1024MB SS N/A SEC 813HCH9 K4B1G0846D • •
Transcend TS128MLK72V3U 1024MB SS N/A K4B1G0846D(ECC) • •
Transcend TS256MLK64V3U 2048MB DS Micron 9GF27D9KPT • •
Transcend TS256MLK64V3U 2048MB DS N/A SEC816HCH9K4B1G0846D • •
SS/
Brand Chip NO.
DS
Timing
DIMM
(BIOS)
Chapter 1: Product introduction1-14
DDR3-1066MHz capability
Voltage
DIMM
Support
A* B*
Vendor Part No. Size
Crucial CT12864BA1067.8FF 1024MB SS Micron 9GF22D9KPT 7 • •
Crucial CT12872BA1067.9FF 1024MB SS Micron 9HF22D9KPT(ECC) 7 • •
Crucial CT25664BA1067.16FF 2048MB DS Micron 9HF22D9KPT 7 • •
Crucial CT25672BA1067.18FF 2048MB DS Micron 9GF22D9KPT(ECC) 7 • •
Elpida EBJ51UD8BAFA-AC-E 512MB SS Elpida J5308BASE-AC-E • •
Elpida EBJ51UD8BAFA-AE-E 512MB SS Elpida J5308BASE-AC-E • •
Kingston KVR1066D3N7/1G 1024MB SS Kingston D1288JEKAPGA7U 7 1.5V • •
Kingston KVR1066D3N7/2G 2048MB DS Kingston D1288JEKAPGA7U 7 1.5V • •
Micron MT8JTF12864AY-1G1D1 1024MB SS Micron 8ED22D9JNL • •
Micron MT8JTF12864AZ-1G1F1 1024MB SS Micron 9GF22D9KPT 7 • •
Micron MT9JSF12872AZ-1G1F1 1024MB SS Micron 9HF22D9KPT(ECC) 7 • •
Micron MT16JTF25664AY-1G1D1 2048MB DS Micron 8LD22D9JNL • •
Micron MT16JTF25664AZ-1G1F1 2048MB DS Micron 9HF22D9KPT 7 • •
Micron MT18JSF25672AZ-1G1F1 2048MB DS Micron 9GF22D9KPT(ECC) 7 • •
OCZ OCZ3SOE10662GK 2048MB(Kit of 2) DS N/A Heat-Sink Package 7-7-7-16 1.75V • •
SAMSUNG M378B2873EH1-CF8 1024MB SS Samsung SEC 901 HCF8 K4B1G0846E • •
SAMSUNG M378B5273BH1-CF8 4096MB DS Samsung 846 K4B2G0846B-HCF8 • •
SS/
Brand Chip NO.
DS
Timing
DIMM
(BIOS)
SS: Single-sided / DS: Double-sided
DIMM support:
• A*: Supports one module inserted into either slot as single-channel memory
conguration.
• B*: Supports one pair of modules inserted into both the blue slots as one pair of
dual-channel memory conguration.
Visit the ASUS website at www.asus.com for the latest QVL.
ASUS M4N68T-M 1-15
1.7.3 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.
1. Press the retaining clips outward to
unlock a DIMM socket.
2. Align a DIMM on the socket such that
the notch on the DIMM matches the
break on the socket.
1
Unlocked retaining clip
A DIMM is keyed with a notch so that it ts in only one direction. DO NOT force a DIMM into
a socket to avoid damaging the DIMM.
3. Firmly insert the DIMM into the socket
until the retaining clips snap back in place
and the DIMM is properly seated.
Locked Retaining Clip
1.7.4 Removing a DIMM
To remove a DIMM:
1. Simultaneously press the retaining clips
outward to unlock the DIMM.
Support the DIMM lightly with your
ngers when pressing the retaining
clips. The DIMM might get damaged
when it ips out with extra force.
2
DIMM notch
1
3
2
1
1
DIMM notch
2. Remove the DIMM from the socket.
Chapter 1: Product introduction1-16
1.8 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.
1.8.1 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 rmly 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.
1.8.2 Conguring an expansion card
After installing the expansion card, congure 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, conicts will arise between the two PCI
groups, making the system unstable and the card inoperable.
1.8.3 PCI slots
The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specications.
1.8.4 PCI Express x1 slot
This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that
comply with the PCI Express specications.
1.8.5 PCI Express x16 slot
This motherboard supports a PCI Express x16 graphics card that comply with the PCI
Express specications.
ASUS M4N68T-M 1-17
1.9 Jumpers
M4N68T-M
M4N68T-M Clear RTC RAM
1
2
2 3
Normal
(Default)
Clear RTC
CLRTC
1. Clear RTC RAM (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 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 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 so the BIOS can automatically reset parameter settings to
default values.
Chapter 1: Product introduction1-18
2. USB device wake-up (3-pin USBPW1-4, USBPW5-10)
M4N68T-M
M4N68T-M USB Device Wake Up
21
2 3
+5V
(Default)
+5VSB
USBPW5-10
21
2 3
+5V
+5VSB
(Default)
USBPW1-4
M4N68T-M
M4N68T-M Keyboard Power Setting
21
2 3
+5V
(Default)
+5VSB
KBPWR
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 these jumpers to +5VSB to wake up the computer from S3 and S4 sleep
modes (no power to CPU, DRAM in slow refresh, power supply in reduced power
mode).
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 (the default is the Space Bar). This feature requires an ATX power
supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in
the BIOS.
ASUS M4N68T-M 1-19
1.10 Connectors
4 53
68 7
2
10 9
1
11
1.10.1 Rear panel ports
1. PS/2 Mouse port (green). This port is for a PS/2 mouse.
2. Parallel port. This 25-pin port connects a parallel printer, a scanner, or other devices.
3. 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
4. Line In port (light blue). This port connects to the tape, CD, DVD player, or other
audio sources.
5. Line Out port (lime). This port connects to a headphone or a speaker. In 4-channel,
6-channel, and 8-channel congurations, the function of this port becomes Front
Speaker Out.
6. Microphone port (pink). This port connects to a microphone.
Refer to the audio conguration table below for the function of the audio ports in the 2, 4, 6,
or 8-channel conguration.
Audio 2, 4, 6, 8-channel conguration
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
To congure 8-channel audio, use the chassis with HD audio module in the front panel to
support 8-channel audio output.
ACT/LINK
LED
LAN port
SPEED
LED
Chapter 1: Product introduction1-20
7. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to
M4N68T-M
M4N68T-M Analog front panel connector
AAFP
PIN 1
GND
PRESENCE#
SENSE1_RETUR
SENSE2_RETUR
PORT1 L
PORT1 R
PORT2 R
SENSE_SEND
PORT2 L
HD-audio-compliant
pin definition
PIN 1
AGNDNCNC
NC
MIC2
MICPWR
Line out_R
NC
Line out_L
Legacy AC’97
compliant definition
USB 2.0 devices.
8. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports connect to
USB 2.0 devices.
9. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other
VGA-compatible devices.
10. COM port. This 9-pin COM1 port is for pointing devices or other serial devices.
11. PS/2 Keyboard port (purple). This port is for a PS/2 keyboard.
1.10.2 Internal connectors
1. 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 Denition Audio or AC`97 audio standard. Connect one end of the front
panel audio I/O module cable to this connector.
• We recommend that you connect a high-denition front panel audio module to this
connector to avail of the motherboard high-denition audio capability.
• If you want to connect a high denition front panel audio module to this connector, set
the Front Panel Select item in the BIOS to [HD Audio]. See section 2.4.3 Chipset for
details.
• The front panel audio I/O module is purchased separately.
ASUS M4N68T-M 1-21
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
M4N68T-M
M4N68T-M ATX power connectors
EATXPWR
PIN 1
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
ATX12V
PIN 1
+12V DC
+12V DC
GND
GND
These connectors are for an ATX power supply. The plugs from the power supply are
designed to t these connectors in only one orientation. Find the proper orientation and
push down rmly until the connectors completely t.
•
We recommend that you use an ATX 12V Specication 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 ATX12V power plug. Otherwise, the system will not
boot up.
• We recommend that you use a PSU with higher power output when conguring 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.
Chapter 1: Product introduction1-22
3. IDE connector (40-1 pin PRI_IDE)
PRI_IDE
NOTE:Orient the red markings
on the IDE ribbon cable to PIN 1.
PIN1
M4N68T-M
M4N68T-M IDE connector
The onboard IDE connector is for Ultra DMA 133/100 signal cable. There are three
connectors on each Ultra DMA 133/100 signal cable: blue, black, and gray. Connect
the blue connector to the motherboard’s IDE connector, then select one of the following
modes to congure your devices:
Drive jumper setting Mode of device(s) Cable connector
Single device Cable-Select or Master - Black
Cable-Select
Two devices
Master Master
Slave Slave
• Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA
cable connector. This prevents incorrect insertion when you connect the IDE cable.
• Use the 80-conductor IDE cable for Ultra DMA 133/100 IDE devices.
If any device jumper is set as “Cable-Select”, ensure that all other device jumpers have the
same setting.
Master Black
Slave Gray
Black or gray
ASUS M4N68T-M 1-23
4. Serial ATA connectors (7-pin SATA1, SATA2, SATA3, SATA4)
SATA1
GND
RSATA_RXN1
RSATA_RXP1
GND
RSATA_TXN1
RSATA_TXP1
GND
SATA3
GND
RSATA_RXN3
RSATA_RXP3
GND
RSATA_TXN3
RSATA_TXP3
GND
SATA2
GND
RSATA_TXP2
RSATA_TXN2
GND
RSATA_RXP2
RSATA_RXN2
GND
SATA4
GND
RSATA_TXP4
RSATA_TXN4
GND
RSATA_RXP4
RSATA_RXN4
GND
M4N68T-M
M4N68T-M SATA connectors
M4N68T-M
+5V
GND
GND
Speaker Out
SPEAKER
PIN 1
M4N68T-M Speaker Out Connector
These connectors are for the Serial ATA signal cables for Serial ATA 3Gb/s hard disk
and optical disk drives. The Serial ATA 3Gb/s is backward compatible with Serial ATA
1.5Gb/s specication. The data transfer rate of the Serial ATA 3Gb/s is faster than the
standard parallel ATA with 133MB/s (Ultra DMA133).
• Install the Windows® XP Service Pack 2 or later versions before using Serial ATA.
• The motherboard does not provide a oppy disk drive connector. You could use a USB
oppy disk drive when installing Windows® XP operating system on a hard disk drive
that includes a RAID/AHCI set.
• Due to Windows® XP limitation, Windows® XP may not recognize the USB oppy disk
drive.
• For more details on RAID/AHCI, refer to the RA ID/AHCI Supplementary Guide included
in the folder named Manual in the support DVD.
5. Internal 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.
Chapter 1: Product introduction1-24
6. System panel connector (10-1 pin F_PANEL)
M4N68T-M
M4N68T-M System panel connector
PIN 1
PWR BTN
PLED+
PLED-
PWR
GND
IDE_LED+
IDE_LED-
Ground
Reset
F_PANEL
PWR LED
HD_LED RESET
This connector supports several chassis-mounted functions.
• System power LED (2-pin PWRLED)
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 HDLED)
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The HDD Activity LED lights up or ashes when data is read from or
written to the HDD.
• Power/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.
ASUS M4N68T-M 1-25
7. USB connectors (10-1 pin USB56, USB78, USB910)
M4N68T-M
M4N68T-M USB2.0 connectors
PIN 1
USB+5V
USB_P10-
USB_P10+
GND
NC
USB+5V
USB_P9-
USB_P9+
GND
USB910USB78
PIN 1
USB+5V
USB_P8-
USB_P8+
GND
NC
USB+5V
USB_P7-
USB_P7+
GND
USB56
PIN 1
USB+5V
USB_P6-
USB_P6+
GND
NC
USB+5V
USB_P5-
USB_P5+
GND
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 specication 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.
Chapter 1: Product introduction1-26
8. Digital audio connector (4-1 pin SPDIF_OUT)
SPDIF_OUT
+5V
SPDIFOUT
GND
M4N68T-M
M4N68T-M Digital audio connector
CPU_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
Rotation
+12V
GND
CHA_FAN
M4N68T-M
M4N68T-M fan connectors
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.
Ensure that the audio device of Sound playback is VIA High Denition Audio (the name
may be different based on the OS). Go to Start > Control Panel > Sounds and Audio
Devices > Sound Playback to congure the setting.
The S/PDIF module is purchased separately.
9. 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.
DO NOT forget to connect the fan cables to the fan connectors. Insufcient air ow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
Only the 4-pin CPU fan connector supports the ASUS Q-Fan feature.
ASUS M4N68T-M 1-27
1.11 Software support
1.11.1 Installing an operating system
This motherboard supports Windows® XP/Vista/7 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.
1.11.2 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.
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. The DVD automatically displays the Drivers
menu if Autorun is enabled on your computer.
The following screen is for reference only.
Click an item to install
If Autorun is NOT enabled on your computer, browse the contents of the Support DVD to
locate the le ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run
the DVD.
Click an icon to
display Support
DVD/motherboard
information
Chapter 1: Product introduction1-28
Chapter 2
BIOS information
2.1 Managing and updating your BIOS
Save a copy of the original motherboard BIOS le to a USB ash 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 into the optical drive. The Drivers menu appears.
2. Click the Utilities tab, then click ASUS Update.
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 > ASUS Update >
ASUS Update to launch the ASUS Update utility.
2. From the dropdown 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 trafc, or click Auto
Select then click Next.
c. From the FTP site, select the BIOS version that you want to download then click
Next.
The ASUS Update utility is capable of updating itself through the Internet. Always update
the utility to avail all its features.
ASUS M4N68T-M 2-1
Updating from a BIOS file
a. Select Update BIOS from a le, then click Next.
b. Locate the BIOS le from the Open window, then click Open.
3. Follow the onscreen instructions to complete the updating process.
2.1.2 ASUS EZ Flash 2 utility
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 le from the ASUS website at
www.asus.com.
To update the BIOS using EZ Flash 2:
1. Insert the USB ash disk that contains the latest BIOS le to the USB port, then launch
EZ Flash 2 in either of these two ways:
• Press <Alt> + <F2> during POST.
• Enter the BIOS setup program. Go to the Tools menu to select EZ Flash 2 and
press <Enter> to enable it.
2. Press <Tab> to switch between drives until the correct BIOS le is found, then press
<Enter>. EZ Flash 2 performs the BIOS updating process and automatically reboots
the system when done.
ASUSTek EZ Flash 2 BIOS ROM Utility V3.44
FLASH TYPE: WINBOND W25X80
Current ROM
BOARD: M4N68T-M
VER: 0203 (H:00 B:01)
DATE: 11/12/2009
PATH: C:\
C:
Update ROM
BOARD: Unknown
VER: Unknown
DATE: Unknown
Note
[ Ente r] Sel ect o r Lo ad [ Tab ] Sw itc h [V ] Dr ive In fo
[Up/Down/Home/End] Move [B] Backup [ESC] Exit
• This function supports USB ash 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!
2-2 Chapter 2: BIOS information
2.1.3 ASUS CrashFree BIOS utility
The ASUS CrashFree BIOS is an auto recovery tool that allows you to restore the BIOS le
when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS
le using the motherboard support DVD or a removable device that contains the updated
BIOS le.
• Before using this utility, rename the BIOS le in the removable device into
M4N68TM.ROM.
• The BIOS le in the support DVD may not be the latest version. Download the latest
BIOS le from the ASUS website at www.asus.com.
• The removable devices that ASUS CrashFree BIOS supports vary with motherboard
models. For motherboards without a oppy connector, prepare a USB ash disk before
using this utility.
Recovering the BIOS
To recover the BIOS:
1. Turn on the system.
2. Insert the support DVD to the optical drive or the removable device that contains the
BIOS le to the USB port or to the oppy disk drive, if supported.
3. The utility automatically checks the devices for the BIOS le. When the BIOS le is
found, the utility reads it and starts ashing the corrupted BIOS le.
4. Turn off the system after the utility completes the updating process and turn it on again.
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause
system boot failure!
Ensure to load the BIOS default settings to ensure system compatibility and stability. Select
the Load Setup Defaults item under the Exit menu. Refer to section 2.8 Exit menu for
details.
ASUS M4N68T-M 2-3
2.2 BIOS setup program
Use the BIOS Setup program to update the BIOS or congure 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:
• Press <Delete> during the Power-On Self-Test (POST). If you do not press <Delete>,
POST continues with its routines.
Entering BIOS Setup after POST
To enter BIOS Setup after POST:
• Press <Ctrl>+<Alt>+<Delete> 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 rst two options.
Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force
reset from a running operating system can cause damage to your data or system. We
recommend that you always shut down the system properly from the operating system.
• The default BIOS settings for this motherboard apply to most conditions to ensure
optimum performance. If the system becomes unstable after changing any BIOS
settings, load the default settings to ensure system compatibility and stability. Select the
Load Setup Defaults item under the Exit menu. See section 2.8 Exit Menu.
• The BIOS setup screens in this chapter are for reference only. They may not exactly
match what you see on your screen.
• Visit the ASUS website at www.asus.com to download the latest BIOS le for this
motherboard.
2-4 Chapter 2: BIOS information
2.2.1 BIOS menu screen
Menu items
Main Advanced Power Boot Tools Exit
Main Settings
System Time [19:34:30]
System Date [Fri 11/13/2009]
IDE Conguration
Primary IDE Master :[Not Detected]
Primary IDE Slave :[Not Detected]
SATA1 :[Not Detected]
SATA2 :[Not Detected]
SATA3 :[Not Detected]
SATA4 :[Not Detected]
System Information
Submenu items
Menu bar
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
Conguration elds
BIOS SETUP UTILITY
General help
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a eld.
Use [+] or [-] to
congure system
Time.
Select Screen
Select Item
Change Field
+-
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit
Navigation keys
2.2.2 Menu bar
The menu bar on top of the screen has the following main items:
Main For changing the basic system conguration
Advanced For changing the advanced system settings
Power For changing the advanced power management (APM) conguration
Boot For changing the system boot conguration
Tools For conguring options for special functions
Exit For selecting the exit options and loading default settings.
To select an item on the menu bar, press the right or left arrow key on the keyboard until the
desired item is highlighted.
2.2.3 Navigation keys
At the bottom right corner of a menu screen are the navigation keys for that particular menu.
Use the navigation keys to select items in the menu and change the settings.
Some of the navigation keys differ from one screen to another.
ASUS M4N68T-M 2-5
2.2.4 Menu items
The highlighted item on the menu bar displays the specic items for that menu. For example,
selecting Main shows the Main menu items.
The other items (Advanced, Power, Boot, Tools, and Exit) on the menu bar have their
respective menu items.
2.2.5 Submenu items
A solid triangle before each item on a menu screen means that the item has a submenu. To
display the submenu, select the item and press <Enter>.
2.2.6 Conguration elds
These elds show the values for the menu items. If an item is user- congurable, you can
change the value of the eld opposite the item. You cannot select an item that is not
user-congurable.
A congurable eld is enclosed in brackets, and is highlighted when selected. To change the
value of a eld, select it then press <Enter> to display a list of options. Refer to 2.2.7 Pop-up
window.
2.2.7 Pop-up window
Select a menu item then press
<Enter> to display a pop-up
window with the conguration
options for that item.
2.2.8 Scroll bar
A scroll bar appears on the right
side of a menu screen when there
are items that do not t on the
screen. Press the <Up> / <Down>
Main Advanced Power Boot Tools Exit
Suspend Mode [Auto]
ACPI 2.0 Support [Disabled]
ACPI APIC support [Enabled]
APM Conguration
Hardware Monitor
v02.58 (C)Copyright 1985-2009, American, American Megatrends, Inc.
BIOS SETUP UTILITY
Options
Disabled
Enabled
Pop-up window
Use [ENTER], [TAB] or
[SHIFT-TAB] to select
a eld.
Use [+] or [-] to
congure system
Time.
Scroll bar
Select Screen
Select Item
+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit
arrow keys or <Page Up> /<Page
Down> keys to display the other
items on the screen.
2.2.9 General help
At the top right corner of the menu screen is a brief description of the selected item.
2-6 Chapter 2: BIOS information
2.3 Main menu
When you enter the BIOS Setup program, the Main menu screen appears, giving you an
overview of the basic system information.
Refer to section 2.2.1 BIOS menu screen for information on the menu screen items and
how to navigate through them.
Main Advanced Power Boot Tools Exit
Main Settings
System Time [19:34:30]
System Date [Fri 11/13/2009]
IDE Conguration
Primary IDE Master :[Not Detected]
Primary IDE Slave :[Not Detected]
SATA1 :[Not Detected]
SATA2 :[Not Detected]
SATA3 :[Not Detected]
SATA4 :[Not Detected]
System Information
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
BIOS SETUP UTILITY
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a eld.
Use [+] or [-] to
congure system
Time.
Select Screen
Select Item
Change Field
+-
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit
2.3.1 System Time [xx:xx:xx]
Allows you to set the system time.
2.3.2 System Date [Day xx/xx/xxxx]
Allows you to set the system date.
2.3.3 IDE Conguration
The IDE Conguration menu allows you to congure your storage devices. Select an item
then press <Enter> to display the submenu.
Onboard IDE Controller [Enabled]
Enables or disables the onboard IDE port. Conguration options: [Disabled] [Enabled]
Serial-ATA Devices [SATA1,2,3,4]
Conguration options: [Disabled] [SATA 1,2] [SATA1,2,3,4]
nVidia RAID Function [Disabled]
Enables or disables the nVidia RAID function. Conguration options: [Disabled] [Enabled]
ASUS M4N68T-M 2-7
2.3.4 Primary IDE Master/Slave, SATA 1/2/3/4
While entering Setup, the BIOS automatically detects the presence of IDE/SATA devices.
There is a separate submenu for each IDE/SATA device. Select a device item then press
<Enter> to display the IDE/SATA device information.
The BIOS automatically detects the values opposite the dimmed items (Device, Vendor, Size,
LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART monitoring). These
values are not user-congurable. These items show Not Detected if no IDE/SATA device is
installed in the system.
Type [Auto]
Selects the type of IDE drive. Setting this item to [Auto] allows automatic selection of the
appropriate IDE device type. Select [CDROM] if you are specically conguring a CD-ROM
drive. Select [ARMD] (ATAPI Removable Media Device) if your device is either a ZIP, LS-120,
or MO drive. Conguration options: [Not Installed] [Auto] [CDROM] [ARMD]
This item only appears in the Primary IDE Master/Slave menus.
LBA/Large Mode [Auto]
Enables or disables the LBA mode. Setting this item to [Auto] enables the LBA mode if the
device supports this mode, and if the device was not previously formatted with LBA mode
disabled. Conguration options: [Disabled] [Auto]
Block (Multi-Sector Transfer) Mode [Auto]
Enables or disables data multi-sectors transfers. When this item is set to [Auto], the data
transfer from and to the device occurs multiple sectors at a time if the device supports multisector transfer feature. When this item is set to [Disabled], the data transfer from and to the
device occurs one sector at a time. Conguration options: [Disabled] [Auto]
PIO Mode [Auto]
Selects the PIO mode. Conguration options: [Auto] [0] [1] [2] [3] [4]
DMA Mode [Auto]
Selects the DMA mode. Conguration options: [Auto]
SMART Monitoring [Auto]
Sets the Smart Monitoring, Analysis, and Reporting Technology.
Conguration options: [Auto] [Disabled] [Enabled]
32Bit Data Transfer [Enabled]
Enables or disables 32-bit data transfer. Conguration options: [Disabled] [Enabled]
2-8 Chapter 2: BIOS information
2.3.5 System Information
This menu gives you an overview of the general system specications. The BIOS
automatically detects the items in this menu.
BIOS Information
Displays the auto-detected BIOS information.
Processor
Displays the auto-detected CPU specication.
System Memory
Displays the auto-detected system memory.
2.4 Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other system
devices.
Take caution when changing the settings of the Advanced menu items. Incorrect eld
values can cause the system to malfunction.
Main Advanced Power Boot Tools Exit
Advanced Settings
JumperFree Conguration
CPU Conguration
Chipset
Onboard Devices Conguration
PCIPnP
USB Conguration
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
BIOS SETUP UTILITY
Adjust System
Frequency/Voltage etc.
Select Screen
Select Item
+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit
2.4.1 JumperFree Conguration
The items and conguration options in this menu may vary depending on the AMD CPU
type.
CPU OverClocking [Auto]
Selects the CPU overclocking options to achieve desired CPU internal frequency.
Conguration options: [Manual] [Auto] [Standard] [Overclock Prole]
ASUS M4N68T-M 2-9
The following item only appears when you set CPU Overclocking to [Manual].
CPU/HT Reference Clock (MHz) [200]
Sets the CPU/HT Reference Clock. Conguration options: [Min.200] [Max.300]
The following item only appears when you set CPU Overclocking to [Overclock Prole].
Overclock Options [Auto]
Selects the overclocking prole. Conguration options: [Auto] [Overclock 3%]
[Overclock 5%] [Overclock 7%]
PCIE Overclocking [Auto]
Congures the PCIE overclocking. Conguration options: [Auto] [Manual]
The following item only appears when you set PCIE Overclocking to [Manual].
PCIE Frequency [100]
Sets the PCIE Clock. Conguration options: [Min.100] [Max.150]
GPU Overclocking [Auto]
Congures the GPU overclocking. Conguration options: [Auto] [Manual]
The following item only appears when you set GPU Overclocking to [Manual].
GPU Frequency [300]
Sets the GPU Engine Clock. Conguration options: [Min.300] [Max.1000]
Processor Frequency Multiplier [Auto]
Sets the processor frequency multiplier. Conguration options: [Auto] [Min. x4.0 800MHz][Min. x4.0 800MHz]
[Max. x15.0 3000MHz]
CPU/NB Frequency [Auto]
Sets the CPU/Northbridge frequency. Conguration options: [Auto] [4.00x] [5.00x] [6.00x]
[7.00x] [8.00x] [9.00x] [10.00x]
HT Over Voltage [Auto]
Sets the HyperTransport over voltage. The valid value ranges vary depending on your CPUThe valid value ranges vary depending on your CPU
model. Use <+> / <-> keys to adjust the ratio. Conguration options: [Auto] [Min. 1.20000V]
[Max. 1.38000V]
CPU Over Voltage [Auto]
Sets the CPU over voltage. The valid value ranges vary depending on your CPU model. Use
<+> / <-> keys to adjust the ratio. Conguration options: [Auto]
2-10 Chapter 2: BIOS information
VDDNB Over Voltage [Auto]
Sets the VDDNB over voltage. The valid value ranges vary depending on your CPU model.
Use <+> / <-> keys to adjust the ratio. Conguration options: [Auto]
LoadLine Calibration [Auto]
Sets the LoadLine. Conguration options: [Auto] [Max.100%] [Min.0%]
If the system becomes unstable after changing the setting, set it back to [Auto] for safe
mode.
Memory Clock Mode [Auto]
Sets the memory clock mode. Conguration options: [Auto] [Manual]
The following item only appears when you set Memory Clock Mode to [Manual].
Memclock Value [400MHz]
Selects the DRAM frequency programming method.
Conguration options: [400MHz] [533MHz] [667MHz] [800MHz]
DRAM Timing Mode [Auto]
Sets the DRAM timing mode. Conguration options: [Auto] [DCT 0] [DCT 1] [Both]
Memory Over Voltage [Auto]
Sets the memory over voltage. The values range from 1.5000V to 2.4450V with a 0.0150V
increment. Use the <+> / <-> keys to adjust the value. Conguration options: [Auto] [Max.
2.4450V] [Min. 1.5000V]
Chipset Over Voltage [Auto]
Sets the chipset over voltage. The values range from 1.20000V to 1.60000V with a 0.01000V
increment. Use the <+> / <-> keys to adjust the value. Conguration options: [Auto]
[Max. 1.60000V] [Min. 1.20000V]
ASUS M4N68T-M 2-11
2.4.2 CPU Conguration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
GART Error Reporting [Disabled]
This option should remain disabled for the normal operation. The driver developer may
enable it for testing purpose. Conguration options: [Disabled] [Enabled]
Microcode Updation [Enabled]
Enables or disables Microcode Updation. Conguration options: [Disabled] [Enabled]
Secure Virtual Machine Mode [Disabled]
Enables or disables Secure Virtual Machine Mode (SVM). Conguration options: [Disabled]
[Enabled]
Cool ‘n’ Quiet [Enabled]
Enables or disables the AMD® Cool ‘n’ Quiet technology. Conguration options: [Enabled]
[Disabled]
2.4.3 Chipset
NorthBridge Conguration
Memory Conguration
Bank Interleaving [Disabled]
Allows you to enable the bank memory interleaving. Conguration options: [Disabled]
[Auto]
Channel Interleaving [XOR of Address bit]
Allows you to enable the channel memory interleaving.
Conguration options: [Disabled] [Address bits 6] [Address bits 12]
[XOR of Address bits [20:16, 6]] [XOR of Address bits [20:16, 9]]
Enable Clock to All DIMMs [Disabled]
Enables unused Clocks to DIMMs even though memory slots are not populated.
Conguration options: [Disabled] [Enabled]
MemClk Tristate C3/ATLVID [Disabled]
Allows you to enable or disable MemClk Tri-Stating during C3 and Alt VID.
Conguration options: [Disabled] [Enabled]
Memory Hole Remapping [Enabled]
Allows you to enable or disable memory remapping around memory hole.
Conguration options: [Disabled] [Enabled]
DCT Unganged Mode [Always]
Allows you to select the unganged DRAM mode (64-bit width).
Conguration options: [Auto] [Always]
Power Down Enable [Disabled]
Allows you to enable or disable DDR power down mode.
Conguration options: [Disabled] [Enabled]
2-12 Chapter 2: BIOS information
Page Smashing [Disabled]
Allows you to enable or disable the Page Smashing Mechanism. Conguration options:
[Disabled] [IC] [DC] [Enabled]
ECC Conguration
ECC Mode [Disabled]
Allows you to set the ECC mode. Conguration options: [Disabled] [Basic] [Good]
[Super] [Max] [User]
SouthBridge Conguration
Primary Graphics Adapter [PCIE -> PCI -> IGP]
Selects the primary display adapter.
Conguration options: [PCIE -> PCI -> IGP] [IGD -> PCI -> PCIE]
OnChip VGA Frame Buffer Size [256MB]
Selects the onboard VGA frame buffer size. Conguration options: [Auto] [32MB]
[64MB] [128MB] [256MB]
Azalia Audio [Auto]
Enables or disables the Azalia audio controller. Conguration options: [Auto] [Disabled]
Front Panel Select [HD Audio]
This item appears only when the Azalia Audio item is set to [Auto].
Conguration options: [HD Audio] [AC97]
MAC LAN [Disabled]
Enables or disables the onboard LAN controller. Conguration options: [Enabled] [Disabled]
OnBoard LAN Boot ROM [Disabled]
This item appears only when the MAC LAN item is set to [Auto]. Conguration options:
[Disabled] [Enabled]
ASUS M4N68T-M 2-13
2.4.4 Onboard Device Conguration
Serial Port1 Address [3F8/IRQ4]
Allows you to select the Serial Port1 base address. Conguration options: [Disabled]
[3F8/IRQ4][2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
Serial Port1 Mode [Normal]
Allows you to select the Serial Port1 mode.
Conguration options: [Normal] [IrDA] [ASK IR]
Parallel Port Address [378]
Allows you to select the Parallel Port base addresses. Conguration options: [Disabled] [378]
[278] [3BC]
Parallel Port Mode [Normal]
Allows you to select the Parallel Port mode. Conguration options: [Normal] [EPP] [ECP]
[EPP+ECP]
Parallel Port IRQ [IRQ7]
Conguration options: [IRQ5] [IRQ7]
2.4.5 PCIPnP
The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices.
The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA
devices, and setting the memory size block for legacy ISA devices.
Take caution when changing the settings of the PCI PnP menu items. Incorrect eld values
can cause the system to malfunction.
Plug and Play O/S [No]
When this item is set to [No], BIOS congures all the devices in the system. When this item
is set to [Yes] and if you install a Plug and Play operating system, the operating system
congures the Plug and Play devices not required for boot. Conguration options: [No] [Yes]
2-14 Chapter 2: BIOS information
2.4.6 USB Conguration
The items in this menu allows you to change the USB-related features. Select an item then
press <Enter> to display the conguration options.
The Module Version and USB Devices Enabled items show 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 functions. Conguration options: [Disabled]
[Enabled]
USB 2.0 Controller [Enabled]
Enables or disables USB 2.0 Controllers. Conguration options: [Disabled] [Enabled]
Legacy USB Support [Auto]
Allows you to enable or disable support for Legacy USB storage devices, including USB ash
drives and USB hard drives. 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. Conguration options: [Disabled] [Enabled]
[Auto]
USB 2.0 Controller Mode [HiSpeed]
Allows you to congure the USB 2.0 controller in HiSpeed (480Mbps) or Full Speed
(12Mbps). Conguration options: [FullSpeed] [HiSpeed]
The following items only appear when a USB storage device is plugged in.
USB Mass Storage Device Conguration
USB Mass Storage Reset Delay [20 Sec]
Sets the maximum time that the BIOS waits for the USB storage device to initialize.
Conguration options: [10 Sec] [20 Sec] [30 Sec] [40 Sec]
Emulation Type [Auto]
Allows you to set the emulation type. Conguration options: [Auto] [Floppy]
[Forced FDD] [Hard Disk] [CDROM]
ASUS M4N68T-M 2-15
2.5 Power menu
The Power menu items allow you to change the settings for the Advanced Conguration and
Power Interface (ACPI) and the Advanced Power Management (APM). Select an item then
press <Enter> to display the conguration options.
Main Advanced Power Boot Tools Exit
Power Settings
Suspend Mode [Auto]
ACPI 2.0 Support [Enabled] ACPI APIC Support [Enabled]
APM Conguration
HW Monitor Conguration
Anti Surge Support [Enabled]
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.5.1 Suspend Mode [Auto]
Allows you to select the Advanced Conguration and Power Interface (ACPI) state to be used
for system suspend. Conguration options: [S1 (POS) Only] [S3 Only] [Auto]
2.5.2 ACPI 2.0 Support [Enabled]
Allows you to enable or disable the Advanced Conguration and Power Interface (ACPI) 2.0
support. Conguration options: [Disabled] [Enabled]
2.5.3 ACPI APIC Support [Enabled]
Allows you to enable or disable the Advanced Conguration and Power Interface (ACPI)
support in the Advanced Programmable Interrupt Controller (APIC). When set to Enabled, the
ACPI APIC table pointer is included in the RSDT pointer list. Conguration options: [Disabled]
[Enabled]
BIOS SETUP UTILITY
Select the ACPI state
used for System
Suspend.
Select Screen
Select Item
+- Change Option
F1 General Help
F10 Save and Exit
ESC Exit
2.5.4 APM Conguration
Restore on AC Power Loss [Always Off]
When this item is set to [Always Off], the system goes into off state after an AC power
loss. When this item is set to [Always On], the system goes on after an AC power loss.
Conguration options: [Always Off] [Always On] [Last State]
Power on By PCI(-E) Device [Disabled]
When set to [Enabled], this parameter allows you to wake the system through a PCI Express/
PCI card. This feature requires an ATX power supply that provides at least 1A on the +5VSB
lead. Conguration options: [Disabled] [Enabled] Conguration options: [Disabled] [Enabled]
Power on By Ring [Disabled]
Enables or disables ring to generate a wake event. Conguration options: [Disabled]
[Enabled]
2-16 Chapter 2: BIOS information
Keyboard PowerOn [Disabled]
Allows you to use specic keys on the keyboard to turn on the system. This feature requires
an ATX power supply that provides at least 1A on the +5VSB lead. Conguration options:
[Disabled] [Space Bar] [Ctrl-Esc] [Power Key]
Mouse PowerOn [Disabled]
When set to [Enabled], this parameter allows you to use the PS/2 mouse to turn on the
system. This feature requires an ATX power supply that provides at least 1A on the +5VSB
lead. Conguration options: [Disabled] [Enabled]
Power on By RTC Alarm [Disabled]
Allows you to enable or disable RTC to generate a wake event. When this item is set to
Enabled, the items RTC Alarm Date, RTC Alarm Hour, RTC Alarm Minute, and RTC Alarm
Second appear with set values. Conguration options: [Disabled] [Enabled]
2.5.5 HW Monitor Conguration
CPU Temperature [xxxºC/xxxºF] or [Ignored]
MB Temperature [xxxºC/xxxºF] or [Ignored]
The onboard hardware monitor automatically detects and displays the motherboard and CPU
temperatures. Select Ignored if you do not wish to display the detected temperatures.
CPU / Chassis Fan Speed [N/A], [xxxxRPM], or [Ignored]
The onboard hardware monitor automatically detects and displays the CPU / Chassis fan
speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the eld
shows N/A. Select [gnored] if you do not want the detected speed to be displayed.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xx.xxxV] or [Ignored]
The onboard hardware monitor automatically detects the voltage output through the onboard
voltage regulators.
Smart Q-Fan Function [Disabled]
Enables or disables the ASUS Q-Fan feature that smartly adjusts the CPU fan speeds for
more efcient system operation. Conguration options: [Disabled] [Enabled]
2.5.6 Anti Surge Support [Enabled]
Enables or disables the Anti-Surge function. Conguration options: [Disabled] [Enabled]
ASUS M4N68T-M 2-17
2.6 Boot menu
The Boot menu items allow you to change the system boot options. Select an item then
press <Enter> to display the submenu.
Main Advanced Power Boot Tools Exit
Boot Settings
Boot Device Priority
Boot Settings Conguration
Security
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.6.1 Boot Device Priority
1st ~ xxth Boot Device
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. Conguration options: [Removable Dev.] [Hard Drive]
[ATAPI CD-ROM] [Disabled]
• To select the boot device during system startup, press <F8> when ASUS logo appears.
• To access Windows OS in Safe Mode, do any of the following:
• Press <F5> when ASUS logo appears.
• Press <F8> after POST.
BIOS SETUP UTILITY
Species the Boot
Device Priority
sequence.
A virtual oppy disk
drive (Floppy Drive B:)
may appear when you set
the CD-ROM drive as the
rst boot device.
Select Screen
Select Item
Enter Go to Sub Screen
F1 General Help
F10 Save and Exit
ESC Exit
2.6.2 Boot Settings Conguration
Quick Boot [Enabled]
Enabling this item allows the BIOS to skip some power on self tests (POST) while booting
to decrease the time needed to boot the system. When this item is set to [Disabled], BIOS
performs all the POST items. Conguration options: [Disabled] [Enabled]
Full Screen Logo [Enabled]
Enables or disables the full screen logo display feature. Conguration options: [Disabled]
[Enabled]
Set this item to [Enabled] to use the ASUS MyLogo2™ feature.
2-18 Chapter 2: BIOS information
AddOn ROM Display Mode [Force BIOS]
Sets the display mode for option ROM. Conguration options: [Force BIOS] [Keep Current]
Bootup Num-Lock [On]
Selects the power-on state for the NumLock. Conguration options: [Off] [On]
Wait for ‘F1’ If Error [Enabled]
When this item is set to [Enabled], the system waits for the F1 key to be pressed when error
occurs. Conguration options: [Disabled] [Enabled]
Hit ‘DEL’ Message Display [Enabled]
When this item is set to [Enabled], the system displays the message Press DEL to run
Setup during POST. Conguration options: [Disabled] [Enabled]
2.6.3 Security
The Security menu items allow you to change the system security settings. Select
an item then press <Enter> to display the conguration options.
Change Supervisor Password
Select this item to set or change the supervisor password. The Supervisor Password item
on top of the screen shows the default Not Installed. After you set a password, this item
shows Installed.
To set a Supervisor Password:
1. Select the Change Supervisor Password item and press <Enter>.
2. On the password box, key in a password containing up to six letters, or numbers, orOn the password box, key in a password containing up to six letters, or numbers, or
both, then press <Enter>.
3. Conrm the password when prompted.
The message Password Installed appears after you successfully set your password.
To change the supervisor password, follow the same steps as in setting a supervisor
password.
To clear the supervisor password, select the Change Supervisor Password then press
<Enter> twice. The message Password uninstalled appears.
If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock
(RTC) RAM. See section 1.9 Jumpers for information on how to erase the RTC RAM.
ASUS M4N68T-M 2-19
After you have set a supervisor password, the other items appear to allow you to change
other security settings.
User Access Level [Full Access]
This item allows you to select the access restriction to the Setup items. Conguration options:
[No Access] [View Only] [Limited] [Full Access]
No Access prevents user access to the Setup utility.
View Only allows access but does not allow change to any eld.
Limited allows changes only to selected elds, such as Date and Time.
Full Access allows viewing and changing all the elds in the Setup utility.
Change User Password
Select this item to set or change the user password. The User Password item on top of the
screen shows the default Not Installed. After you set a password, this item shows Installed.
To set a User Password:
1. Select the Change User Password item and press <Enter>.
2. On the password box, key in a password containing up to six letters, or numbers, orOn the password box, key in a password containing up to six letters, or numbers, or
both, then press <Enter>.
3. Conrm the password when prompted.
The message “Password Installed” appears after you set your password successfully.
To change the user password, follow the same steps as in setting a user password.
Clear User Password
Select this item to clear the user password.
Password Check [Setup]
When set to [Setup], BIOS checks for user password when accessing the Setup utility. When
set to [Always], BIOS checks for user password both when accessing Setup and booting the
system. Conguration options: [Setup] [Always]
2-20 Chapter 2: BIOS information
2.7 Tools menu
The Tools menu items allow you to congure options for special functions. Select an item
then press <Enter> to display the sub-menu.
Main Advanced Power Boot Tools Exit
ASUS EZ Flash 2
Express Gate [Auto] Enter OS Timer [10 Seconds] Reset User Data [No]
ASUS O.C. Prole
AI NET2
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.7.1 ASUS EZ Flash 2
Allows you to run ASUS EZ Flash 2. When you press <Enter>, a conrmation message
appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to
conrm your choice. Please see section 2.1.2 for details.
2.7.2 Express Gate [Auto]
Allows you to enable or disable the ASUS Express Gate feature. ASUS Express Gate is
a unique instant-on environment that provides quick access to the Internet and Skype.
Conguration options: [Auto] [Enabled] [Disabled]
Enter OS Timer [10 Seconds]
Sets countdown duration that the system waits at the Express Gate’s rst screen
before starting Windows or other installed OS. Choose [Prompt User] to stay at the
rst screen of Express Gate for user action. Conguration options: [Prompt User]
[1 second] [3 seconds] [5 seconds] [10 seconds] [15 seconds] [20 seconds]
[30 seconds]
Reset User Data [No]
Allows you to clear Express Gate’s user data. Conguration options: [No] [Reset]
When setting this item to [Reset], ensure to save the setting to the BIOS so that the
user data will be cleared the next time you enter the Express Gate. User data includes
the Express Gate’s settings as well as any personal information stored by the web
browser (bookmarks, cookies, browsing history, etc.). This is useful in the rare case
where corrupt settings prevent the Express Gate environment from launching properly.
BIOS SETUP UTILITY
Press ENTER to run
the utility to select
and update BIOS. This
utility supports:
1.FAT 12/16/32 (r/w)
2.NTFS (read only)
3.CD-DISC (read only)
Select Screen
Select Item
Enter Go to Sub
Screen
F1 General Help
F10 Save and Exit
ESC Exit
The rst time wizard will run again when you enter the Express Gate environment after
clearing its settings.
ASUS M4N68T-M 2-21
2.7.3 ASUS O.C. Prole
This item allows you to store or load multiple BIOS settings.
Add Your CMOS Prole
Allows you to save the current BIOS le to the BIOS Flash. In the Name sub-item, type your
prole name and press <Enter>, and then choose a prole number to save your CMOS
settings in the Save to sub-item.
Load CMOS Proles
Allows you to load the previous BIOS settings saved in the BIOS Flash. Press <Enter>, and
choose a prole to load.
Start O.C. Prole
Allows you to run the utility to save and load CMOS. Press <Enter> to run the utility.
ASUSTek O.C. Prole Utility V1.44
Current CMOS
BOARD: M4N68T-M
VER: 0203 (H:00 B:01)
DATE: 11/12/2009
PATH: C:\
C:
Note
[ Ente r] Sel ect o r Lo ad [ Tab ] Sw itc h [V ] Dr ive In fo
[Up/Down/Home/End] Move [B] Backup [ESC] Exit
• This function can support devices such as a USB ash disk with FAT 32/16 format and
single partition only.
• DO NOT shut down or reset the system while updating the BIOS to prevent the system
boot failure!
• We recommend that you update the BIOS le only coming from the same memory/CPU
conguration and BIOS version.
• Only the CMO le can be loaded.
Restore CMOS
BOARD: Unknown
VER: Unknown
DATE: Unknown
2.7.4 AI NET 2
Check Realtek Phy LAN cable [Disabled]
Enables or disables checking of the Realtek LAN cable during the Power-On Self-Test
(POST). Conguration options: [Disabled] [Enabled]
2-22 Chapter 2: BIOS information
2.8 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 Boot Tools Exit
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 nished 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 conrmation window appears. Select OK to save changes and exit.
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 elds other than System Date, System Time, and
Password, the BIOS asks for a conrmation 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 conrmation 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 conrmation 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.
BIOS SETUP UTILITY
Exit system setup
after saving the
cahnges.
F10 key can be used
for this operation.
ASUS M4N68T-M 2-23
2-24 Chapter 2: BIOS information
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