ASUS M4A785TD-V EVOU3S6, M4A785TD-V EVO User Manual
M4A785TD-V EVO
Motherboard
E4820
First Edition V1
July 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
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
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),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS
MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or
copyrights of their respective companies, and are used only for identication or explanation and to the
owners’ benet, without intent to infringe.
ii
Contents
Notices ......................................................................................................... vi
Safety information ..................................................................................... vii
About this guide ....................................................................................... viii
M4A785TD-V EVO specications summary ............................................. ix
Chapter 1: Product introduction
1.1 Welcome! ...................................................................................... 1-1
1.2 Package contents .........................................................................
1.3 Special features ............................................................................
1.3.1 Product highlights ...........................................................
1.3.2 Innovative ASUS features ...............................................
1.4 Before you proceed .....................................................................
1.5 Motherboard overview .................................................................
1.5.1 Placement direction ........................................................
1.5.2 Screw holes ....................................................................
1.5.3 Motherboard layout .........................................................
1.5.4 Layout contents ...............................................................
1.6 Central Processing Unit (CPU) ...................................................
1.6.1 Installing the CPU ...........................................................
1.6.2 Installing the heatsink and fan ......................................
1.7 System memory .........................................................................
1.7.1 Overview ........................................................................
1.7.2 Memory congurations ..................................................
1.7.3 Installing a DIMM ..........................................................
1.7.4 Removing a DIMM ........................................................
1.8 Expansion slots ..........................................................................
1.8.1 Installing an expansion card .........................................
1.8.2 Conguring an expansion card .....................................
1.8.3 PCI slots ........................................................................
1.8.4 PCI Express x1 slot .......................................................
1.8.5 PCI Express x16 slots ...................................................
1.9 Jumpers ......................................................................................
1.10 Connectors .................................................................................
1.10.1 Rear panel ports ...........................................................
1.10.2 Internal connectors .......................................................
1-1
1-1
1-1
1-3
1-5
1-6
1-6
1-6
1-7
1-7
1-8
1-8
1-10
1-11
1-11
1-12
1-16
1-16
1-17
1-17
1-17
1-17
1-17
1-17
1-18
1-19
1-19
1-21
iii
Contents
1.11 Software support ........................................................................ 1-29
1.11.1 Installing an operating system ......................................
1.11.2 Support DVD information ..............................................
Chapter 2: BIOS information
2.1 Managing and updating your BIOS ............................................ 2-1
2.1.1 ASUS Update utility ........................................................
2.1.2 ASUS EZ Flash 2 utility ...................................................
2.1.3 ASUS CrashFree BIOS 3 utility ......................................
2.2 BIOS setup program ....................................................................
2.2.1 BIOS menu screen ..........................................................
2.2.2 Menu bar .........................................................................
2.2.3 Navigation keys ...............................................................
2.2.4 Menu items .....................................................................
2.2.5 Submenu items ...............................................................
2.2.6 Conguration elds .........................................................
2.2.7 Pop-up window ...............................................................
2.2.8 Scroll bar .........................................................................
2.2.9 General help ...................................................................
2.3 Main menu ....................................................................................
2.3.1 System Time ...................................................................
2.3.2 System Date ...................................................................
2.3.3 Primary IDE Master/Slave, SATA 1/2/3/5/6, ESATA ........
2.3.4 SATA Conguration .........................................................
2.3.5 System Information .........................................................
2.4 Advanced menu ...........................................................................
2.4.1 JumperFree Conguration ..............................................
2.4.2 CPU Conguration ........................................................
2.4.3 Chipset ..........................................................................
2.4.4 Onboard Device Conguration ......................................
2.4.5 PCIPnP .........................................................................
2.4.6 USB Conguration ........................................................
1-29
1-29
2-1
2-2
2-3
2-4
2-5
2-5
2-5
2-6
2-6
2-6
2-6
2-6
2-6
2-7
2-7
2-7
2-7
2-8
2-8
2-9
2-9
2-12
2-13
2-14
2-15
2-15
iv
Contents
2.5 Power menu ................................................................................ 2-16
2.5.1 Suspend Mode ..............................................................
2.5.2 ACPI 2.0 Support ..........................................................
2.5.3 ACPI APIC Support .......................................................
2.5.4 APM Conguration ........................................................
2.5.5 HW Monitor Conguration .............................................
2.6 Boot menu ..................................................................................
2.6.1 Boot Device Priority ......................................................
2.6.2 Boot Settings Conguration ..........................................
2.6.3 Security .........................................................................
2.7 Tools menu .................................................................................
2.7.1 ASUS EZ Flash 2 ..........................................................
2.7.2 Express Gate ................................................................
2.7.3 AI NET 2
2.8 Exit menu ....................................................................................
........................................................................ 2-21
2-16
2-17
2-17
2-17
2-17
2-18
2-18
2-18
2-19
2-20
2-20
2-21
2-22
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.
•
The optical S/PDIF is an optional component (may or may not be included in your
motherboard) and is dened as a CLASS 1 LASER PRODUCT.
INVISIBLE LASER RADIATION, AVOID EXPOSURE TO BEAM.
• Never dispose of the battery in re. It could explode and release harmful substances into
the environment.
• Never dispose of the battery with your regular household waste. Take it to a hazardous
material collection point.
• Never replace the battery with an incorrect battery type.
• RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
• DISPOSE OF USED BATTERIES ACCORDING TO THE ABOVE BATTERY-RELATED
INSTRUCTIONS.
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.
This motherboard should only be used in environments with ambient temperatures between
5°C (41°F) and 40°C (104°F).
•
Place the product on a stable surface.
•
If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
vii
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.
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when trying to
complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
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
Bold text 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
M4A785TD-V EVO specications summary
CPU AMD® Socket AM3 for AMD® Phenom™ II / Athlon™ II /
Chipset AMD® 785G / SB710
Front side bus Up to 5200MT/s HyperTransport™ 3.0 interface
Memory Dual-channel memory architecture
VGA Integrated ATI Radeon™ HD 4200 GPU
Expansion slots 2 x PCIe 2.0 x16 slots (blue @ x16 mode, gray @ x4 mode)
Storage / RAID AMD® SB710 southbridge:
LAN RTL8112L Gigabit LAN controller featuring AI NET2
Sempron™ 100 series processors
Supports 45nm CPU
AMD Cool ‘n’ Quiet™ Technology
* Refer to www.asus.com for the AMD® CPU support list
4 x 240-pin DIMM slots support maximum 16GB unbuffered
ECC and non-ECC DDR3 1800 (O.C.) / 1600 (O.C.) /
1333 / 1066 MHz 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.
SidePort Memory - onboard 128MB DDR3 1333 memory
- Supports HDMI™ technology with max. resolution up
to 1920 x 1200 (1080p)
- Supports Dual-link DVI with max. resolution up to
2560 x 1600 @60Hz
- Supports D-Sub with max. resolution up to
2048 x 1536 @85Hz
- Supports Hybrid CrossFireX™ technology (for
Windows® Vista only)
- Supports dual independent displays with HDMI/DVI
and D-Sub
- Supports Microsoft® DirectX 10.1, OpenGL 2.0, Shader
Model 4.1
- Supports Hardware Decode Acceleration for H.264,
VC-1, and MPEG-2
- Maximum shared memory of 512MB
1 x PCIe x1 slot
3 x PCI slots
- 1 x Ultra DMA 133/100/66 connector for up to 2 PATA
devices
- 5 x Serial ATA 3Gb/s connectors support RAID 0,
RAID 1, RAID 0+1, and JBOD congurations
- 1 x eSATA 3Gb/s port
(continued on the next page)
ix
M4A785TD-V EVO specications summary
Audio VIA® VT1708S High Denition Audio 8-channel CODEC
USB Supports up to 12 USB 2.0/1.1 ports (6 ports at mid-board,
1394 VT6308P controller supports 2 IEEE 1394a ports (1 port at
ASUS unique features ASUS Power Solutions:
Other features 100% All High-quality Conductive Polymer Capacitors
ASUS exclusive
overclocking features
Supports Jack-detect, Multi-streaming, and Front Panel
Jack-Retasking technologies
Optical S/PDIF Out port at back I/O
6 ports at the back panel)
mid-board, 1 port at the back panel)
- 8+2 Phase Power Design
ASUS Green Design:
- ASUS EPU
ASUS Expree Gate
ASUS Quiet Thermal Solution:
- ASUS Fanless Design: Stylish heat sink solution
- ASUS Q-Fan
ASUS EZ DIY:
- ASUS CrashFree BIOS 3
- ASUS MyLogo 2
- ASUS EZ Flash 2
AMD® OverDrive Support*
* Advanced cooling system is requied when advanced
overclocking functions of AMD® OverDrive are enabled.
Intelligent overclocking tools:
- Turbo V
- GPU NOS
- Turbo Key
Precision Tweaker 2:
- vCore: Adjustable CPU voltage at 0.00625V increment
- vChipset (N.B.): 48-step voltage control
- vDIMM: 47-step DRAM voltage control
SFS (Stepless Frequency Selection):
- FSB tuning from 200MHz up to 400MHz at 1MHz
increment
- PCIe frequency tuning from 100MHz up to 150MHz at
1MHz increment
Overclocking Protection:
- ASUS C.P.R. (CPU Parameter Recall)
(continued on the next page)
x
M4A785TD-V EVO specications summary
Back panel I/O ports 1 x PS/2 Keyboard / Mouse Combo port
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,
Manageability WOL by PME, WOR by PME, WOR by Ring, PXE
Accessories 1 x Ultra DMA 133/100/66 cable
Support DVD Drivers
Form factor ATX form factor: 12 in x 9.6 in (30.5 cm x 24.4 cm)
1 x Optical S/PDIF Out port
1 x HDMI port
1 x DVI port
1 x eSATA port
1 x D-Sub port
1 x IEEE 1394a port
1 x LAN (RJ-45) port
6 x USB 2.0/1.1 ports
8-channel audio I/O ports
6 USB 2.0/1.1 ports
1 x COM connector
1 x IDE connector
5 x SATA connectors
1 x High denition front panel audio connector
1 x System panel connector
1 x IEEE 1394a connector
1 x LPT connector
1 x S/PDIF Out connector
1 x CPU fan connector
1 x Power fan connector
1 x Chassis fan connector
1 x 24-pin EATX power connector
1 x 4-pin ATX 12V power connector
SM BIOS 2.5, ACPI2.0a, ASUS EZ Flash 2,
ASUS CrashFree BIOS 3
4 x Serial ATA cables
1 x I/O shield
1 x User Manual
ASUS Express Gate
ASUS Update
ASUS PC Probe II
AMD OverDrive Utility (AOD)
Anti-Virus software (OEM version)
*Specications are subject to change without notice.
xi
xii
Chapter 1
Product introduction
1.1 Welcome!
Thank you for buying an ASUS® M4A785TD-V EVO 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 M4A785TD-V EVO motherboard
Cables 4 x Serial ATA cables
1 x Ultra DMA 133/100/66 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 M4A785TD-V EVO 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 1333
memory support and accelerates data transfer rate up to 5200MT/s via
HyperTransport™ 3.0-based system bus. This motherboard also supports
AMD® CPUs in the new 45nm manufacturing process.
AMD® 785G / SB710 Chipset
The AMD 785G / SB710 Chipset is designed to support up to 5200MT/s
HyperTransport™ 3.0 (HT 3.0) interface speed and PCI Express 2.0
x16 graphics. It is optimized with AMD’s latest AM3 multi-core CPUs to
provide excellent system performance and overclocking capabilities.
HyperTransport™ 3.0 support
HyperTransport™ 3.0 technology provides 2.6 times more bandwidth
than HT1.0 that radically improves system efciency for a smoother and
faster computing environment.
SidePort Memory
This motherboard features SidePort Memory, an individual onboard
DDR3 memory serving as memory buffer for integrated graphics. With
low CPU usage, the SidePort Memory provides integrated graphics
acceleration.
HDMI support
Enjoy Full HD 1080p Multimedia Home-Theater Entertainment
High-Denition Multimedia Interface (HDMI) is a set of digital video
standards that delivers multi-channel audio and uncompressed digital
video for full HD 1080p visuals through a single cable. Supporting HDCP
copy protection such as HD DVD and Blu-ray Discs, HDMI provides you
with the highest-quality home theater experience.
HDMI/DVI/RGB support
Flexible Graphics Alternatives
This motherboard supports multiple digital and analog display output
interfaces - HDMI, DVI, and D-Sub. With such diversity of display outputs,
you are able to choose and upgrade display devices freely.
DDR3 1800 (O.C.) support
This motherboard supports DDR3 1800 (O.C.) that provides faster
data transfer rate and more bandwidth to increase memory computing
efciency, enhancing system performance in 3D graphics and other
memory demanding 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.
IEEE 1394a support
IEEE 1394a interface provides high speed digital interface for audio /
video appliances such as digital television, digital video camcorders,
storage peripherials and other portable devices.
S/PDIF digital sound ready
This motherboard provides convenient connectivity to external home
theater audio systems via the optical S/PDIF (SONY-PHILIPS Digital
Interface) Out jack. It allows digital audio transferring without converting it
to analog format, and therefore well preserves singnal quality.
Chapter 1: Product introduction1-2
ATI Hybrid CrossFireX™ support
ATI Hybrid CrossFireX™ technology greatly boosts graphics performance
with an onboard GPU and a discrete graphics card.
• Hybrid CrossFireX is supported by Windows® Vista OS only.
• Refer to
www.amd.com for the discrete graphics cards that support Hybrid
CrossFireX™.
Serial ATA 3Gb/s technology and SATA-On-The-Go
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. The external
SATA port provides smart setup and hot-plug functions for easy data
backup to external devices.
8-channel high denition audio
The onboard 8-channel HD audio (High Denition Audio, previously
codenamed Azalia) CODEC enables high-quality 192KHz/24-bit audio
output and jack-detect feature that automatically detects and identies
what types of peripherals are plugged into the audio I/O jacks and noties
users of inappropriate connection, which means there will be no more
confusion of Line-in, Line-out, and Mic jacks.
1.3.2 Innovative ASUS features
ASUS 8+2 Phase Power Design
To fully unleash the AM3 CPU’s potential, the ASUS M4 Series
motherboards have adopted a brand-new 8-phase VRM power design
which delivers high power efciency and supreme overclocking ability.
This series’ high quality power components effectively lower system
temperature to ensure longer component lifespan. This series also
features an extra 2 phase power dedicated to integrated memory/HT
controller.
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 TurboV
Feel the adrenaline rush of real-time OC-now a reality with the ASUS
TurboV. This easy OC tool allows you to overclock without exiting or
rebooting the OS; and its user-friendly interface makes overclock with just
a few clicks away. Moreover, the ASUS OC proles in TurboV provides
the best O.C. settings in different scenarios.
ASUS M4A785TD-V EVO 1-3
ASUS Express Gate
ASUS Express Gate is an instant-on environment that gives you quick
access to the Internet. Five seconds after powering on your computer,
you can instantly surf the Internet without 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 Express Gate complies with the OpenGL standard. Refer to
for Express Gate source codes.
support.asus.com
GPU NOS
GPU NOS technology intelligently detects graphic loading and
automatically boosts performance for the most demanding tasks.
It provides you with a faster reaction time for an excellent graphics
performance.
ASUS MyLogo 2™
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 CPU fan speeds according
to system loading to ensure a quiet, cool, and efcient operation.
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 NET 2
ASUS AI NET 2 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.
Chapter 1: Product introduction1-4
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.
1.4 Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• Unplug the power cord from the wall socket before touching any component.
• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due to
static electricity.
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.
• Before you install or remove any component, 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 M4A785TD-V EVO 1-5
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 nine screws into the holes indicated by circles to secure the motherboard to the
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
1.5.4 Layout contents
Connectors/Jumpers/Slots/LED Page Connectors/Jumpers/Slots/LED Page
1. CPU, power, and chassis fan connectors
(4-pin CPU_FAN, 3-pin PWR_FAN, and 3-pin CHA_FAN)
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
3. CPU Socket AM3
4. DDR3 DIMM slots
5. SATA connectors (7-pin SATA1, SATA2, SATA3, SATA5,
SATA6)
6. IDE connector (40-1 pin PRI_IDE)
7. Onboard power LED (SB_PWR)
8. Clear RTC RAM (3-pin CLRTC)
ASUS M4A785TD-V EVO 1-7
1-28 9. System panel connector (20-8 pin PANEL) 1-25
1-22 10. USB connectors (10-1 pin USB78, USB910,
USB1112)
1-8 11. IEEE 1394a connector (10-1 pin IE1394_1) 1-21
1-11 12. LPT connector (26-1 pin LPT) 1-26
1-24 13. Digital audio connector (4-1 pin SPDIF_OUT) 1-27
1-23 14. Front panel audio connector (10-1 pin AAFP) 1-27
1-5 15. Serial port connector (10-1 pin COM1) 1-28
1-18 16. PCIe x16 / PCIe x1 / PCI slots 1-17
1-26
1.6 Central Processing Unit (CPU)
This motherboard comes with an AM3 socket designed for Phenom™ II / Athlon™ II /
Sempron™ 100 series processors.
The AM3 socket has a different pinout from the AM2+/AM2 socket. Ensure that you use a
CPU designed for the AM3 socket. The CPU ts in only one correct orientation. DO NOT
force the CPU into the socket to prevent bending the pins and damaging the CPU!
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 lever
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!
Small triangle
Chapter 1: Product introduction1-8
Gold triangle
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