M5A78L/USB3
Motherboard
E8022
Second Edition (V2)
January 2013
Copyright © 2013 ASUSTeK Computer Inc. All Rights Reserved.
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such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
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ii
Contents
Notices ......................................................................................................... vi
Safety information ..................................................................................... vii
About this guide ....................................................................................... viii
M5A78L/USB3 specications summar ..................................................... ix
Chapter 1: 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 ............................................................... 1-8
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 .......................................................... 1-17
1.7.4 Removing a DIMM ........................................................ 1-17
1.8 Expansion slots .......................................................................... 1-18
1.8.1 Installing an expansion card ......................................... 1-18
1.8.2 Conguring an expansion card ..................................... 1-18
1.8.3 PCI slots ........................................................................ 1-18
1.8.4 PCI Express x1 slots ..................................................... 1-18
1.8.5 PCI Express x16 slot ..................................................... 1-18
1.9 Jumpers ...................................................................................... 1-19
1.10 Connectors ................................................................................. 1-21
1.10.1 Rear panel ports ........................................................... 1-21
1.10.2 Internal connectors ....................................................... 1-22
iii
Contents
1.11 Software support ........................................................................ 1-29
1.11.1 Installing an operating system ...................................... 1-29
1.11.2 Support DVD information .............................................. 1-29
Chapter 2: BIOS information
2.1 Managing and updating your BIOS ............................................ 2-1
2.1.1 ASUS Update .................................................................. 2-1
2.1.2 ASUS EZ Flash 2 ............................................................ 2-2
2.1.3 ASUS CrashFree BIOS 3 ................................................ 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 [xx:xx:xx] ................................................... 2-7
2.3.2 System Date [Day xx/xx/xxxx] ......................................... 2-7
2.3.3 Primary IDE Master/Slave, SATA3G_1/2/3/4/5/6 ............ 2-7
2.3.4 SATA Conguration ......................................................... 2-8
2.3.5 System Information ......................................................... 2-9
2.4 Advanced menu ......................................................................... 2-10
2.4.1 JumperFree Conguration ............................................ 2-10
2.4.2 CPU Conguration ........................................................ 2-13
2.4.3 Chipset .......................................................................... 2-14
2.4.4 Onboard Devices Conguration .................................... 2-15
2.4.5 PCIPnP ......................................................................... 2-16
2.4.6 USB Conguration ........................................................ 2-16
2.5 Power menu ................................................................................ 2-17
2.5.1 Suspend Mode [Auto] ................................................... 2-17
2.5.2 ACPI 2.0 Support [Enabled] .......................................... 2-17
2.5.3 ACPI APIC Support [Enabled] ....................................... 2-17
iv
2.5.4 APM Conguration ........................................................ 2-17
2.5.5 HW Monitor Conguration ............................................. 2-18
2.5.6 Anti Surge Support [Enabled] ....................................... 2-18
2.6 Boot menu .................................................................................. 2-19
2.6.1 Boot Device Priority ...................................................... 2-19
2.6.2 Boot Settings Conguration .......................................... 2-19
2.6.3 Security ......................................................................... 2-20
2.7 Tools menu ................................................................................. 2-22
2.7.1 ASUS EZ Flash 2 .......................................................... 2-22
2.7.2 ASUS O.C. Prole ......................................................... 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.
ASUS Recycling/Takeback Services
ASUS recycling and takeback programs come from our commitment to the highest standards
for protecting our environment. We believe in providing solutions for you to be able to
responsibly recycle our products, batteries, other components as well as the packaging
materials. Please go to http://csr.asus.com/english/Takeback.htm for the detailed recycling
information in different regions.
vi
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://csr.asus.com/english/REACH.htm.
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.
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.
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
M5A78L/USB3 specications summar
CPU AMD
®
Socket AM3+ for AMD® FX™ / Phenom™ II / Athlon™ II /
Sempron™ 100 series processors
AMD® Cool ‘n’ Quiet™ Technology
Supports CPU up to 140W
* Refer to www.asus.com for the AMD® CPU support list
Chipset AMD® 760G (780L) / SB710
System bus Up to 5200 MT/s HyperTransport™ 3.0 interface
Memory Dual-channel memory architecture
4 x DIMM, max. 32GB, DDR3 2000(O.C.) / 1866(O.C.) / 1800(O.
C.) / 1600(O.C.) / 1333 / 1066 MHz, ECC and non-ECC, un-
buffered memory
Dual-channel memory architecture
* AMD® FX™ Series CPU on this motherboard supports up to
DDR3 1866MHz as its standard memory frequency.
** Due to CPU spec., AMD® 100 and 200 series CPUs support
up to DDR3 1066MHz. With ASUS design, this motherboard
can support up to DDR3 1333MHz.
*** When overclocking, some AMD CPU models may not
support DDR3 1600 MHz or higher frequency DIMMs.
**** 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.
Expansion slots 1 x PCIe 2.0 x16 slot
2 x PCIe 2.0 x1 slots
3 x PCI slots
Storage 1 x Ultra DMA 133/100/66 connector
6 x Serial ATA 3Gb/s connectors support RAID 0, RAID 1,
RAID 10, and JBOD congurations
LAN
Realtek® 8111E PCle Gigabit LAN controller
Audio ALC887 8-channel* High Denition Audio CODEC
* Use a chassis with HD audio module in the front panel to
support an 8-channel audio output.
USB AMD® SB710 chipset:
- 8 x USB 2.0/1.1 ports (6 ports at the mid-board, 2 ports at
the back panel)
Asmedia USB 3.0 controller:
- 2 x USB 3.0 ports (blue, at the back panel)
(continued on the next page)
ix
M5A78L/USB3 specications summary
ASUS unique
features
Other features
Back panel I/O
ports
Internal I/O
connectors
BIOS 16 Mb Flash ROM, AMI BIOS, PnP, DMI v2.0, WfM 2.0, ACPI v2.0a,
Accessories 2 x Serial ATA cables
Support DVD Drivers
Form factor
Core Unlocker
ASUS EPU-4 Engine
ASUS Turbo Key
ASUS Anti-Surge protection
ASUS Q-Fan
ASUS AI Charger
ASUS CrashFree BIOS 3
ASUS EZ Flash 2
ASUS MyLogo 2
ASUS C.P.R. (CPU Parameter Recall)
100% All high quality conductive polymer capacitors
1 x PS/2 Keyboard port
1 x PS/2 Mouse port
1 x LAN (RJ-45) port
1 x COM port
1 x LPT port
3 x Audio jacks
2 x USB 3.0 ports
2 x USB 2.0/1.1 ports
3 x USB 2.0/1.1 connectors support additional 6 USB 2.0/1.1 ports
6 x SATA connectors
1 x Front panel audio connector
1 x CPU fan connector
1 x Chassis fan connector
1 x IDE connector
1 x System panel connector
1 x S/PDIF Out connector
1 x 24-pin EATX power connector
1 x 4-pin ATX 12V power connector
SM BIOS v2.6
1 x I/O shield
1 x User Manual
1 x Support DVD
ASUS utilities
ASUS Update
Anti-virus software (OEM version)
ATX form factor: 12.0 in x 8.5 in (30.5 cm x 21.6 cm)
* Specications are subject to change without notice.
x
Chapter 1
Product introduction
1.1 Welcome!
Thank you for buying an ASUS® M5A78L/USB3 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 M5A78L/USB3 motherboard
Cables 2 x Serial ATA cables
Accessories 1 x I/O shield
Application DVD ASUS motherboard Support DVD
Documentation User Manual
If any of the items is damaged or missing, contact your retailer.
1.3 Special features
1.3.1 Product highlights
AMD® FX™ / Phenom™ II / Athlon™ II / Sempron™ 100 series
ASUS M5A78L/USB3 1-1
CPU 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 5200MT/s via HyperTransport™
3.0-based system bus. This motherboard also supports AMD® CPUs in
the new 32nm 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.
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.
Dual-Channel DDR3 2000(O.C.) support
This motherboard supports DDR3 memory that features data transfer
rates of 2000 (O.C.) / 1866 (O.C.) / 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.
USB 3.0 support
Experience ultra-fast data transfer at 4.8Gbps with USB 3.0 – the latest
connectivity standard. Built to connect easily with next-generation
components and peripherals, USB 3.0 transfers data 10x faster and is
also backward compatible with USB 2.0 components.
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, and RAID 10 congurations for Serial ATA hard drives.
8-channel high denition audio
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 multichannel network games.
100% All High-quality Conductive Polymer Capacitors
This motherboard uses all high-quality conductive polymer capacitors for
durability, improved lifespan, and enhanced thermal capacity.
Chapter 1: Product introduction1-2
1.3.2 Innovative ASUS features
Core Unlocker
ASUS Core Unlocker simplies the activation of a latent AMD® CPU-
with just pressing a key. Enjoy an instant performance boost by simply
unlocking the extra cores, without performing complicated BIOS changes.
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 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 Anti-Surge Protection
This special design protects expensive devices and the motherboard
from damage caused by power surges from switching power supply unit
(PSU).
ASUS M5A78L/USB3 1-3
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.
ErP ready
The motherboard is European Union´s Energy-related Products (ErP)
ready, and ErP requires products to meet certain energy efciency
requirements in regards to energy consumptions. This is in line with
ASUS vision of creating environment-friendly and energy-efcient
products through product design and innovation to reduce carbon
footprint of the product and thus mitigate environmental impacts.
Chapter 1: Product introduction1-4
1.4 Before you proceed
SB_PWR
ON
Standby Power Powered Off
OFF
M5A78L/USB3
M5A78L/USB3 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 M5A78L/USB3 1-5
M5A78L/USB3
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
M5A78L/USB3
PCIEX16
PCIEX1_1
PCIEX1_2
PCI1
PCI2
PCI3
PRI_IDE
USB56 USB78 USB910
AAFP
EATXPWR
CPU_FAN
Lithium Cell
CMOS Power
Super
I/O
ICS
9LPRS483
ALC
887
EPU
RTL
8111E
ASM
1042
KBMS
16Mb
BIOS
SB_PWR
CLRTC
USBPW5-10
21.6cm(8.5in)
AMD
®
RS780L
AMD
®
SB710
DDR3 DIMM_B1 (64bit, 240-pin module)
SOCKET AM3+
DDR3 DIMM_B2 (64bit, 240-pin module)
DDR3 DIMM_A1 (64bit, 240-pin module)
DDR3 DIMM_A2 (64bit, 240-pin module)
SATA3G_1 SATA3G_2
SATA3G_3 SATA3G_4
SATA3G_5 SATA3G_6
AUDIO
LAN1_USB12
USB34
CHA_FAN
PANEL
SPDIF_OUT
30.5cm(12.0in)
USBPW1-4
KBPWR
ATX12V
LPT
COM1
3 54 41 2 6
1013 12 11 214
3
7
8
9
ASUS M5A78L/USB3 1-7
1.5.4 Layout contents
M5A78L/USB3
M5A78L/USB3 CPU socket AM3+
Connectors/Jumpers/Slots Page Connectors/Jumpers/Slots Page
1. Keyboard power (3-pin KBPWR) 1-20 8. IDE connector (40-1 pin PRI_IDE) 1-24
2. USB device wake-up (3-pin USBPW1-4,
USBPW5-10)
3. ATX power connectors (24-pin EATXPWR, 4-pin
ATX12V)
4. CPU and chassis fan connectors (4-pin
CPU_FAN, 3-pin CHA_FAN)
5. AMD CPU socket 1-8 12. Clear RTC RAM (CLRTC) 1-19
6. DDR3 DIMM sockets 1-11 13. Digital audio connector (4-1 pin SPDIF_OUT) 1-27
7. Serial ATA connectors (7-pin SATA3G_1~6) 1-25 14. Front panel audio connector (10-1 pin AAFP) 1-22
1-20 9. Onboard LED (SB_PWR) 1-5
1-23 10. System panel connector (20-8 pin PANEL) 1-26
1-28 11. USB connectors (10-1 pin USB56, USB78,
USB910)
1-27
1.6 Central Processing Unit (CPU)
This motherboard comes with an AM3+ socket designed for FX™ / 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.
Chapter 1: Product introduction1-8
2. Press the lever sideways to unlock the
CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
M5A78L/USB3
M5A78L/USB3 CPU fan connector
socket, then lift it up to a 90°-100° angle.
Socket lever
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
5. When the CPU is in place, push down the socket
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.
Gold triangle
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 M5A78L/USB3 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
M5A78L/USB3
M5A78L/USB3 240-pin DDR3 DIMM sockets
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
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
This motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but
is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are
developed for better performance with less power consumption. The gure illustrates the
location of the DDR3 DIMM sockets:
ASUS M5A78L/USB3 1-11
Channel Sockets
Channel A DIMM_A1 and DIMM_A2
Channel B DIMM_B1 and DIMM_B2
1.7.2 Memory congurations
You may install 1GB, 2GB, 4GB, and 8GB 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.
• We recommend that you install the memory modules from the blue slots for better
overclocking capability.
• AMD® FX™ Series CPU on this motherboard supports up to DDR3 1866MHz as its
standard memory frequency.
• Due to the CPU specication, AMD® 100 and 200 series CPUs support up to DDR3
1066MHz. With ASUS design, this motherboard can support up to DDR3 1333MHz.
• When overclocking, some AMD CPUs may not support DDR3 1600MHz or higher
frequency DIMMs.
• 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
followings:
- Install a maximum of 3GB system memory if you are using a 32-bit Windows
OS.
- Use a 64-bit Windows® OS if you want to install 4GB or more memory on the
motherboard.
• This motherboard does not support DIMMs made up of 512 megabits (Mb) chips or less.
®
M5A78L/USB3 Motherboards Qualied Vendors Lists (QVL)
DDR3-2000(O.C.) MHz capability
Vendor Part No. Size
Transcend TX2400KLU-4GK(XMP) 4GB ( 2x 2GB ) DS - - 9-11-9-28 1.65V • •
SS/DSChip
Brand
Chip
NO.
CL Voltage
DIMM support
A* B* C*
DDR3-1866(O.C.)MHz capability
Vendor Part No. Size SS/DSChip
Corsair CMT4GX3M2A1866C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V • •
Kingston KHX1866C9D3T1K3/3GX(XMP) 3GB(3 x 1GB) SS - - - 1.65V • •
Kingston KHX1866C9D3T1K3/6GX(XMP) 6GB(3 x 2GB) SS - - - 1.65V • •
OCZ OCZ3G1866LV4GK 4GB(2 x 2GB) DS - - 10-10-10-27 1.65V • •
OCZ OCZ3P1866LV4GK 4GB(2 x 2GB) DS - - 9-9-9-27 1.65V • •
Brand
Chip
CL Voltage DIMM support
NO.
Chapter 1: Product introduction1-12
A* B* C*
DDR3-1800(O.C.)MHz capability
Vendor Part No. Size SS/DSChip
OCZ OCZ3P18004GK 4GB(2 x 2GB) DS - - 8-8-8-27 1.9V • •
Brand
Chip
NO.
CL Voltage DIMM support
A* B* C*
DDR3-1600(O.C.)MHz capability
Vendor Part No. Size SS/ DSChip
A-Data AD31600E001GM(O)U3K 3GB(3 x 1GB) SS - - 8-8-8-24 1.65V-1.85V • • •
CORSAIR TR3X3G1600C8D(XMP) 3GB(3 x 1GB) SS - - 8-8-8-24 1.65V • • •
CORSAIR CMP4GX3M2A1600C8(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.65V • • •
CORSAIR CMT4GX3M2A1600C6(XMP) 4GB(2 x 2GB) DS - - 6-6-6-20 1.65V • • •
CORSAIR CMX4GX3M2A1600C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V • •
CORSAIR CMX4GX3M2A1600C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V • • •
CORSAIR TR3X6G1600C8D G(XMP) 6GB(3 x 2GB) DS - - 8-8-8-24 1.65V • • •
CORSAIR TR3X6G1600C9 G(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.65V • • •
CORSAIR CMX8GX3M4A1600C9(XMP) 8GB(4 x 2GB) DS - - 9-9-9-24 1.65V • • •
Crucial BL25664BN1608.16FF(XMP) 6GB(3 x 2GB) DS - - - - • •
G.SKILL F3-12800CL9D-2GBNQ(XMP) 2GB(2 x 1GB) SS - - 9-9-9-24 1.5V~1.6V • •
G.SKILL F3-12800CL7D-4GBRH(XMP) 4GB(2 x 2GB) SS - - 7-7-7-24 1.6V • • •
G.SKILL F3-12800CL7D-4GBECO(XMP) 4GB(2 x 2GB) DS - - 7-7-8-24 XMP 1.35V • • •
G.SKILL F3-12800CL7D-4GBRM(XMP) 4GB(2 x 2GB) DS - - 7-8-7-24 1.6V • • •
G.SKILL F3-12800CL8D-4GBRM(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.60V • • •
G.SKILL F3-12800CL9T-6GBNQ(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.5V~1.6V • • •
GEIL GET316GB1600C9QC(XMP) 16GB(4 x 4GB) DS - - 9-9-9-28 1.6V • • •
GEIL GV34GB1600C8DC(XMP) 2GB DS - - 8-8-8-28 1.6V • •
Kingmax FLGD45F-B8KG9(XMP) 1GB SS Kingmax KFB8FNGXF-
Kingmax FLGE85F-B8KG9(XMP) 2GB DS Kingmax KFB8FNGXF-
KINGSTON KHX1600C9D3K3/12GX(XMP) 12GB(3x4GB) DS - - 9-9-9-27 1.65V • • •
KINGSTON KHX1600C7D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - - 1.65V • • •
Kingston KHX1600C8D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - 8 1.65V • • •
Kingston KHX1600C8D3T1K2/4GX(XMP) 4GB(2 x 2GB) DS - - 8 1.65V • • •
KINGSTON KHX1600C9D3T1K3/6GX(XMP) 6GB(3 x 2GB) DS - - - 1.65V • • •
Kingston KHX1600C9D3K3/6GX(XMP) 6GB(3 x 2GB) DS - - 9 1.65V • • •
OCZ OCZ3BE1600C8LV4GK 4GB(2 x 2GB) DS - - 8-8-8-24 1.65V • • •
OCZ OCZ3BE1600LV4GK 4GB(2 x 2GB) DS - - 7-7-7-24 1.65V • • •
OCZ OCZ3G16004GK 4GB(2 x 2GB) DS - - 8-8-8-24 1.7V • • •
OCZ OCZ3OB1600LV4GK 4GB(2 x 2GB) DS - - - 1.65V • • •
OCZ OCZ3P1600EB4GK 4GB(2 x 2GB) DS - - 7-7-6-24 1.8V • • •
OCZ OCZ3P1600LV4GK 4GB(2 x 2GB) DS - - 7-7-7-24 1.65V • • •
OCZ OCZ3P1600LV4GK 4GB(2 x 2GB) DS - - 7-7-7-24 1.65V • •
OCZ OCZ3G1600LV6GK 6GB(3 x 2GB) DS - - 8-8-8-24 1.65V • • •
Super
WA160UX6G9 6GB(3 x 2GB) DS - - 9 - • • •
Talent
Asint SLZ3128M8-EGJ1D(XMP) 2GB DS Asint 3128M8-GJ1D 9-9-9-24 1.6V • • •
Elixir M2Y2G64CB8HA9N-DG(XMP) 2GB DS - - - - • • •
Kingtiger KTG2G1600PG3 2GB DS - - - - • •
Mushkin 998659(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 - • •
Mushkin 998659(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.5~1.6V • • •
PATRIOT PGS34G1600LLKA 4GB(2 x 2GB) DS - - 7-7-7-20 1.7V • • •
APACER 8GB UNB PC3-12800 CL11 8GB DS APACER AM5D6008BQQSCK - - •
CORSAIR CMZ8GX3M1A1600C10(XMP) 8GB DS - - 10-10-10-27 1.50V • • •
Transcend 8G DDR3 1600 DIMM CL11 8GB DS
ASint SLB304G08-EGN1B 8GB DS Asint SLB304G08-GN1B - - • •
Elixir M2X8G64CB8HB5N-DG(XMP) 8GB DS Elixir 1213 N2CB4G8BOBN-DG - - • • •
Team TED38G1600HC11BK 8GB DS - - 11-11-11-28 - • • •
Brand
SEC 222
HYKO
Chip
NO.
ANX-12A
ANX-12A
6MD9639W - - • • •
CL Voltage DIMM support
- - • • •
- - • • •
A* B* C*
ASUS M5A78L/USB3 1-13
DDR3-1333MHz capability
Vendor Part No. Size SS/ DSChip
A-Data AD31333001GOU 1GB SS A-Data AD30908C8D-151C
A-Data AD31333G001GOU 3GB(3 x 1GB) SS - - 8-8-8-24 1.65-1.85V • • •
A-Data AD31333002GOU 2GB DS A-Data AD30908C8D-151C
Apacer 78.A1GC6.9L1 2GB DS APACER AM5D5808DEWSBG - - • • •
Apacer 78.A1GC6.9L1 2GB DS Apacer AM5D5808FEQSBG 9 - • • •
CORSAIR CM3X1024-1333C9DHX 1GB SS - - 9-9-9-24 1.60V • •
CORSAIR CM3X1024-1333C9 1GB SS - - 9-9-9-24 1.60V • • •
CORSAIR TR3X3G1333C9 G 3GB(3 x 1GB) SS - - 9-9-9-24 1.50V • •
CORSAIR TR3X3G1333C9 G 3GB(3 x 1GB) SS - - 9-9-9-24 1.50V • •
CORSAIR TR3X3G1333C9 3GB(3 x 1GB) SS - - 9-9-9-24 1.50V • • •
CORSAIR CM3X1024-1333C9DHX 1GB DS Corsair - - - • •
CORSAIR CM3X2048-1333C9DHX 2GB DS - - - - • •
CORSAIR TW3X4G1333C9 G 4GB(2 x 2GB) DS - - 9-9-9-24 1.50V • • •
CORSAIR CMX8GX3M4A1333C9 8GB(4 x 2GB) DS - - 9-9-9-24 1.50V • • •
Crucial CT12864BA1339.8FF 1GB SS Micron 9FF22D9KPT 9 - • • •
Crucial CT12872BA1339.9FF 1GB SS Micron 91F22D9KPT(ECC) 9 - • • •
Crucial CT25664BA1339.16FF 2GB DS Micron 9KF27D9KPT 9 - • • •
Crucial CT25672BA1339.18FF 2GB DS Micron 91F22D9KPT(ECC) 9 - • • •
Crucial BL25664BN1337.16FF (XMP) 6GB(3 x 2GB) DS - - 7-7-7-24 1.65V • • •
ELPIDA EBJ10UE8EDF0-DJ-F 1GB SS ELPIDA J1108EDSE-DJ-F - 1.35V(low
ELPIDA EBJ21UE8EDF0-DJ-F 2GB DS ELPIDA J1108EDSE-DJ-F - 1.35V(low
G.SKILL F3-10600CL8D-2GBHK(XMP) 1GB SS G.SKILL - - - • • •
G.SKILL F3-10666CL7T-3GBPK(XMP) 3GB(3 x 1GB) SS - - 7-7-7-18 1.5~1.6V • • •
G.SKILL F3-10666CL9T-3GBNQ 3GB(3 x 1GB) SS - - 9-9-9-24 1.5~1.6V • • •
G.SKILL F3-10600CL8D-4GBHK(XMP) 4GB(2 x 2GB) DS - - 8-8-8-21 1.5-1.6V • • •
G.SKILL F3-10666CL8D-
4GBECO(XMP)
GEIL GV32GB1333C9DC 2GB(2 x 1GB) DS - - 9-9-9-24 1.5V • •
GEIL GV34GB1333C7DC 2GB DS - - 7-7-7-24 1.5V • •
GEIL GG34GB1333C9DC 4GB(2 x 2GB) DS GEIL GL1L128M88BA12N 9-9-9-24 1.3V(low
GEIL GV34GB1333C9DC 4GB(2 x 2GB) DS - - 9-9-9-24 1.5V • • •
Hynix HMT125U6TFR8A-H9 2GB DS HYNIX H5TC1G83TFRH9A - 1.35V(low
KINGMAX FLFD45F-B8KL9 1GB SS KINGMAX KKB8FNWBFGNX-27A - - • • •
KINGMAX FLFE85F-B8KL9 2GB DS KINGMAX KKB8FNWBFGNX-26A - - • • •
Kingston KVR1333D3N9/1G 1GB SS ELPIDA J1108BDBG-DJ-F 9 1.5V • • •
KINGSTON KVR1333D3N9/2G(low prole) 2GB DS ELPIDA J1108BDBG-DJ-F 9 1.5V • • •
Kingston KVR1333D3N9/2G 2GB DS KTC D1288JPNDPLD9U 9 1.5V • • •
Kingston KVR1333D3N9/2G 2GB DS ELPIDA J1108BDSE-DJ-F 9 1.5V • • •
Kingston KHX1333C7D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - 7 1.65V • • •
Kingston KHX1333C9D3UK2/4GX(XMP) 4GB(2 x 2GB) DS - - 9 XMP 1.25V • • •
KINGSTON KVR1333D3N9/4G(low prole) 4GB DS HYNIX H5TQ2G83AFRH9C 9 1.5V • • •
KINGSTON KVR1333D3N9/4G 4GB DS Hynix H5TQ2G83AFR - - • • •
MICRON MT4JTF12864AZ-1G4D1 1GB SS MICRON D9LGQ - - • • •
Micron MT8JTF12864AZ-1G4F1 1GB SS Micron 9FF22D9KPT 9 - • • •
Micron MT9JSF12872AZ-1G4F1 1GB SS Micron 91F22D9KPT(ECC) 9 - • • •
MICRON MT8JTF25664AZ-1G4D1 2GB SS MICRON D9LGK - - • • •
Micron MT16JTF25664AZ-1G4F1 2GB DS Micron 9KF27D9KPT 9 - • • •
Micron MT18JSF25672AZ-1G4F1 2GB DS Micron 91F22D9KPT(ECC) 9 - • • •
MICRON MT16JTF51264AZ-1G4D1 4GB DS MICRON D9LGK - - • • •
OCZ OCZ3G1333LV3GK 3GB(3 x 1GB) DS - - 9-9-9-20 1.65V • •
OCZ OCZ3F13334GK 4GB(2 x 2GB) DS - - 9-9-9-20 1.7V • • •
OCZ OCZ3G13334GK 4GB(2 x 2GB) DS - - 9-9-9-20 1.7V • •
OCZ OCZ3G1333LV4GK 4GB(2 x 2GB) DS - - 9-9-9-20 1.65V • •
OCZ OCZ3P1333LV4GK 4GB(2 x 2GB) DS - - 7-7-7-20 1.65V • • •
OCZ OCZ3RPX1333EB4GK 4GB(2 x 2GB) DS - - 6-5-5-20 1.85V • • •
OCZ OCZ3X13334GK(XMP) 4GB(2 x 2GB) DS - - 7-7-7-20 1.75V • • •
OCZ OCZ3G1333LV6GK 6GB(3 x 2GB) DS - - 9-9-9-20 1.65V • • •
4GB(2 x 2GB) DS - - 8-8-8-
Brand
(continued on the next page)
E0906
E0903
Chip
NO.
CL Voltage DIMM
- - • • •
- - • • •
voltage)
voltage)
XMP 1.35V • • •
8-24
voltage)
voltage)
support
A* B* C*
• • •
• •
• •
• • •
Chapter 1: Product introduction1-14
DDR3-1333MHz capability
Vendor Part No. Size SS/ DSChip
OCZ OCZ3P1333LV6GK 6GB(3 x 2GB) DS - - 7-7-7-20 1.65V • • •
OCZ OCZ3X1333LV6GK(XMP) 6GB(3 x 2GB) DS - - 8-8-8-20 1.60V • • •
OCZ OCZ3G1333LV8GK 8GB ( 2x 4GB ) DS - - 9-9-9-20 1.65V • • •
PSC AL7F8G73D-DG1 1GB SS PSC A3P1GF3DGF928M9B05 8-8-8-24 1.5V • • •
PSC AL8F8G73D-DG1 2GB DS PSC A3P1GF3DGF928M9B05 8-8-8-24 1.5V • • •
SAMSUNG M378B2873DZ1-CH9 1GB SS Samsung SEC 846 HCH9
SAMSUNG M378B2873EH1-CH9 1GB SS Samsung SEC 913 HCH9
SAMSUNG M378B2873FHS-CH9 1GB SS Samsung K4B1G0846F - - • • •
SAMSUNG M391B2873DZ1-CH9 1GB SS Samsung K4B1G0846D-
SAMSUNG M378B5673DZ1-CH9 2GB DS Samsung K4B1G0846D-HCH9 - - • • •
SAMSUNG M378B5673EH1-CH9 2GB DS Samsung SEC 913 HCH9
SAMSUNG M378B5673FH0-CH9 2GB DS Samsung K4B1G0846F - - • • •
SAMSUNG M391B5673DZ1-CH9 2GB DS Samsung K4B1G0846D-
SAMSUNG M378B5273CH0-CH9 4GB DS Samsung K4B2G0846C - - • • •
Super
W1333UA1GH 1GB SS HYNIX H5TQ1G83TFR 9 - • • •
Talent
Super
W1333X2GB8(XMP) 1GB SS - - - - • • •
Talent
Super
W1333UB2GS 2GB DS Samsung K4B1G0846F 9 - • • •
Talent
Super
W1333UB4GS 4GB DS Samsung K4B2G0846C - - • • •
Talent
Super
W1333UX6GM 6GB(3x 2GB) DS Micron 0BF27D9KPT 9-9-9-24 1.5V • • •
Talent
Transcend TS256MLK64V3U 2GB DS Micron 9GF27D9KPT - - • • •
Transcend TS256MLK64V3U 2GB DS Elpida J1108BDBG-DJ-F 9 - • • •
Century PC3-10600 DDR3-1333 9-9-9 1GB SS Micron 8FD22D9JNM - - • •
Elixir M2F2G64CB88B7N-CG 2GB DS Elixir N2CB2G808N-CG - - • • •
Elixir M2Y2G64CB8HC9N-CG 2GB DS Elixir - - - • • •
Elixir M2F4G64CB8HB5N-CG 4GB DS Elixir N2CB2G808N-CG - - • • •
Kingtiger 2GB DIMM PC3-10666 2GB DS Samsung SEC 904 HCH9
Kingtiger KTG2G1333PG3 2GB DS - - - - • • •
PATRIOT PSD31G13332H 1GB DS - - 9 - • • •
PATRIOT PSD31G13332 1GB DS Patriot PM64M8D38U-15 - - • • •
SILICON
SP001GBLTU133S01 1GB SS NANYA NT5CB128M8AN-CG 9 - • • •
POWER
SILICON
SP002GBLTU133S02 2GB DS elixir N2CB1680AN-C6 9 - • • •
POWER
TAKEMS TMS1GB364D081-107EY 1GB SS - - 7-7-7-20 1.5V • • •
TAKEMS TMS1GB364D081-138EY 1GB SS - - 8-8-8-24 1.5V • • •
TAKEMS TMS2GB364D081-107EY 2GB DS - - 7-7-7-20 1.5V • • •
TAKEMS TMS2GB364D081-138EY 2GB DS - - 8-8-8-24 1.5V • • •
TAKEMS TMS2GB364D082-138EW 2GB DS - - 8-8-8-24 1.5V • • •
UMAX E41302GP0-73BDB 2GB DS UMAX U2S24D30TP-13 - - • • •
V-Color TD2G16C9-Z8 2GB DS HYNIX H5TQ1G83AFP - - • • •
Samsung M378B1G73AH0-CH9 8GB DS SAMSUNG K4B4G0846A-HCH9 - - • •
Transcend 8G DDR3 1333 DIMM CL9 8GB DS Transcend E207X8BO643Y - - • • •
Transcend 8G DDR3 1333 DIMM CL9 8GB DS - N/A - - • • •
ASint SLB304G08-EDJ1B 8GB DS Asint SLB304G08-DJ1B - - • • •
PATRIOT PG38G1333EL(XMP) 8GB DS - - 9-9-9-24 1.5V • •
Brand
Chip
NO.
K4B1G08460
K4B1G0846E
HCH9(ECC)
K4B1G0846E
HCH9(ECC)
K4B1G0846D
CL Voltage DIMM
- - • • •
- - • • •
- - • • •
- - • •
- - • • •
- - • • •
support
A* B* C*
ASUS M5A78L/USB3 1-15
DDR3-1066MHz capability
Vendor Part No. Size SS/ DSChip
Crucial CT12864BA1067.8FF 1GB SS Micron 9GF22D9KPT 7 - • • •
Crucial CT12872BA1067.9FF 1GB SS Micron 9HF22D9KPT(ECC) 7 - • • •
Crucial CT25664BA1067.16FF 2GB DS Micron 9HF22D9KPT 7 - • • •
Crucial CT25672BA1067.18FF 2GB DS Micron 9GF22D9KPT(ECC) 7 - • • •
ELPIDA EBJ10UE8EDF0-AE-F 1GB SS ELPIDA J1108EDSE-DJ-F - 1.35V(low
ELPIDA EBJ11UD8BAFA-AE-E 1GB DS Elpida J5308BASE-AC-E - - • • •
ELPIDA EBJ21UE8EDF0-AE-F 2GB DS ELPIDA J1108EDSE-DJ-F - 1.35V(low
KINGSTON KVR1066D3E7/1G 1GB SS ELPIDA J1108BDBG-DJ-
KINGSTON KVR1066D3N7/1G 1GB SS KTC D1288JPNDPLD9U 7 1.5V • • •
KINGSTON KVR1066D3N7/2G 2GB DS ELPIDA J1108BDSE-DJ-F 7 1.5V • • •
KINGSTON KVR1066D3N7/4G 4GB DS Hynix H5TQ2G83AFR 7 1.5V • • •
Micron MT8JTF12864AZ-1G1F1 1GB SS Micron 9GF22D9KPT 7 - • • •
Micron MT9JSF12872AZ-1G1F1 1GB SS Micron 9HF22D9KPT(ECC) 7 - • • •
Micron MT16JTF25664AZ-1G1F1 2GB DS Micron 9HF22D9KPT 7 - • • •
Micron MT18JSF25672AZ-1G1F1 2GB DS Micron 9GF22D9KPT(ECC) 7 - • • •
OCZ OCZ3G1066LV4GK 4GB(2 x 2GB) DS Micron 9BF27D9KPV 7-7-7-20 1.65V • • •
SAMSUNG M378B2873EH1-CF8 1GB SS Samsung SEC 901 HCF8
SAMSUNG M378B5273BH1-CF8 4GB DS SAMSUNG 846 K4B2G0846B-
• AMD® FX™ Series CPU on this motherboard supports up to DDR3 1866MHz as its
standard memory frequency.
• Due to CPU spec., AMD® 100 and 200 series CPUs support up to DDR3 1066MHz. With
ASUS design, this motherboard can support up to DDR3 1333MHz.
• When overclocking, some AMD CPU models may not support DDR3 1600 MHz or
higher frequency DIMMs.
Brand
Chip
NO.
F(ECC)
K4B1G0846E
HCF8
CL Voltage DIMM support
7 1.5V • • •
- - • • •
- - • • •
voltage)
voltage)
A* B* C*
• • •
• • •
SS: Single-sided / DS: Double-sided
DIMM support:
• A*: Supports one module inserted into any slot as single-channel memory conguration.
• B*: Supports one pair of modules inserted into either the blue slots or the black slots
as one pair of dual-channel memory conguration.
• C*: Supports two pairs of modules inserted into both the blue slots and the black slots
as two pairs of dual-channel memory conguration.
When using a DDR3 2000MHz memory module, ensure to install it on the A1 slot for better
overclocking capability.
Visit the ASUS website at www.asus.com for the latest QVL.
Chapter 1: Product introduction1-16
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
DIMM slot key 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 in the wrong direction 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. Remove the DIMM from the socket.
2
DIMM notch
1
DIMM slot key
3
2
1
1
DIMM notch
ASUS M5A78L/USB3 1-17
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 slots
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.
Chapter 1: Product introduction1-18
1.9 Jumpers
M5A78L/USB3
M5A78L/USB3 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.
ASUS M5A78L/USB3 1-19
2. USB device wake-up (3-pin USBPW1-4, USBPW5-10)
M5A78L/USB3
21
2 3
+5V
(Default)
+5VSB
USBPW5-10
21
2 3
+5V
+5VSB
(Default)
USBPW1-4
M5A78L/USB3 USB device wake-up
M5A78L/USB3
21
2 3
+5V
(Default)
+5VSB
KBPWR
M5A78L/USB3 Keyboard power setting
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 compurer 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. This feature requires an ATX power supply that can supply at least 1A
on the +5VSB lead, and a corresponding setting in the BIOS.
Chapter 1: Product introduction1-20
1.10 Connectors
4 53
68 7
2
9
1
10
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.
LED
LAN port
SPEED
LED
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
ACT/LINK
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 the 4, 6, 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 2, 4, 6, or
8-channel conguration.
Audio 2, 4, 6, or 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 an 8-channel audio output:
Use a chassis with HD audio module in the front panel to support 8-channel audio output.
ASUS M5A78L/USB3 1-21
7. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to
M5A78L/USB3
M5A78L/USB3 Front panel audio 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 3.0 ports 3 and 4. These two 9-pin Universal Serial Bus (USB) ports connect to
USB 3.0/2.0 devices.
• DO NOT connect a keyboard / mouse to any USB 3.0 port when installing Windows®
operating system.
• Due to USB 3.0 controller limitation, USB 3.0 devices can only be used under Windows
®
OS environment and after the USB 3.0 driver installation.
• USB 3.0 devices can only be used as data storage only.
• We strongly recommend that you connect USB 3.0 devices to USB 3.0 ports for faster
and better performance for your USB 3.0 devices.
• USB 3.0 ports are unavailable for any USB devices under DOS environments.
9. Serial port. This 9-pin COM1 port is for pointing devices or other serial devices.
10. 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 2.4.4 Onboard
Devices Conguration for details.
• The front panel audio I/O module is purchased separately.
Chapter 1: Product introduction1-22
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
M5A78L/USB3
M5A78L/USB3 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.
ASUS M5A78L/USB3 1-23
3. IDE connector (40-1 pin PRI_IDE)
M5A78L/USB3
M5A78L/USB3 IDE connector
PRI_IDE
NOTE:Orient the red markings
on the IDE ribbon cable to PIN 1.
PIN1
The onboard IDE connector is for Ultra DMA 133/100/66 signal cable. There are three
connectors on each Ultra DMA 133/100/66 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 133/100/66 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
Chapter 1: Product introduction1-24
4. Serial ATA connectors (7-pin SATA3G_1~6)
SATA3G_4
GND
RSATA_TXP4
RSATA_TXN4
GND
RSATA_RXP4
RSATA_RXN4
GND
SATA3G_3
GND
RSATA_TXP3
RSATA_TXN3
GND
RSATA_RXP3
RSATA_RXN3
GND
SATA3G_6
GND
RSATA_TXP6
RSATA_TXN6
GND
RSATA_RXP6
RSATA_RXN6
GND
SATA3G_5
GND
RSATA_TXP5
RSATA_TXN5
GND
RSATA_RXP5
RSATA_RXN5
GND
SATA3G_1
GND
RSATA_RXN1
RSATA_RXP1
GND
RSATA_TXN1
RSATA_TXP1
GND
SATA3G_2
GND
RSATA_RXN2
RSATA_RXP2
GND
RSATA_TXN2
RSATA_TXP2
GND
M5A78L/USB3
M5A78L/USB3 SATA 3.0Gb/s connectors
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). If you install Serial ATA hard disk
drives, you can create a RAID 0, RAID 1, or RAID 10 set through the onboard chipset.
• Install the Windows® XP Service Pack 3 or later versions before using Serial ATA.
• If you intend to create a SATA RAID set, set the type of the SATA connectors to [RAID]
in the BIOS. See 2.3.4 SATA Conguration for details.
• 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 some USB oppy disk
drives.
• For more details on RAID/AHCI, refer to the RAID/AHCI Supplementary Guide included
in the folder named Manual in the support DVD.
ASUS M5A78L/USB3 1-25
5. System panel connector (20-8 pin PANEL)
PIN 1
* Requires an ATX power supply
PLED SPEAKER
PLED+
PLED-
+5V
Ground
Ground
Speaker
IDE_LED+
IDE_LED-
PWR
Ground
Reset
Ground
PANEL
IDE_LED PWRSW RESET
M5A78L/USB3
M5A78L/USB3 System panel connector
This connector supports several chassis-mounted functions.
• System power LED (2-pin PLED)
This 2-pin connector is for the system power LED. Connect the chassis power LED
cable to this connector. The system power LED lights up when you turn on the system
power, and blinks when the system is in sleep mode.
• Hard disk drive activity LED (2-pin IDE_LED)
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The IDE LED lights up or ashes when data is read from or written to
the HDD.
• System warning speaker (4-pin SPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
• ATX power button/soft-off button (2-pin PWRSW)
This connector is for the system power button.
• 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.
Chapter 1: Product introduction1-26
6. USB connectors (10-1 pin USB56, USB78, USB910)
M5A78L/USB3
M5A78L/USB3 USB2.0 connectors
USB+5V
USB_P10-
USB_P10+
GND
NC
USB+5V
USB_P9-
USB_P9+
GND
USB910
PIN 1
USB+5V
USB_P8-
USB_P8+
GND
NC
USB+5V
USB_P7-
USB_P7+
GND
USB78
PIN 1
USB+5V
USB_P6-
USB_P6+
GND
NC
USB+5V
USB_P5-
USB_P5+
GND
USB56
PIN 1
M5A78L/USB3
M5A78L/USB3 Digital audio connector
SPDIF_OUT
+5V
SPDIFOUT
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.
7. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.
Ensure that the audio device of Sound playback is Realtek 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.
ASUS M5A78L/USB3 1-27
8. CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN)
CHA_FAN
CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
M5A78L/USB3
M5A78L/USB3 Fan connectors
GND
+12V
Rotation
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 supports the ASUS Q-Fan feature.
Chapter 1: Product introduction1-28
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. If Autorun is enabled in your computer, the DVD
automatically displays the Specials screen. Click Drivers, Utilities, Make Disk, Manual, and
Contact tabs to display their respective menus.
The following screen is for reference only.
Click an icon to
display Support DVD/
motherboard information
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.
ASUS M5A78L/USB3 1-29
Chapter 1: Product introduction1-30
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
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
c. From the FTP site, select the BIOS version that you want to download then click
ASUS M5A78L/USB3 2-1
Select then click Next.
Next.
The ASUS Update utility is capable of updating itself through the Internet. Always update
the utility to avail all its features.
Updating from a BIOS file
a. Select Update BIOS from 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
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.
Press <Tab> to switch between drives until the correct BIOS le is found.
ASUSTek EZ Flash 2 BIOS ROM Utility V3.44
FLASH TYPE: WINBOND W25X/Q16
Current ROM
BOARD: M5A78L/USB3
VER: 0313 (H:01 B:11)
DATE: 04/06/2011
PATH: C:\
C:
Update ROM
BOARD: Unknown
VER: Unknown
DATE: Unknown
Note
[ Ent er] Se lec t o r L oad [T ab] S wit ch [ V] Dr ive In fo
[Up/Down/Home/End] Move [B] Backup [ESC] Exit
2. When the correct BIOS le is found, EZ Flash 2 performs the BIOS update process
and automatically reboots the system when done.
2-2 Chapter 2: BIOS information
• 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!
2.1.3 ASUS CrashFree BIOS 3
ASUS CrashFree BIOS 3 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 USB ash drive that contains the BIOS le.
• Before using this utility, rename the BIOS le in the USB ash drive into
M5A78LU.ROM.
• Download the latest BIOS le from the ASUS website at www.asus.com.
Recovering the BIOS
To recover the BIOS:
1. Turn on the system.
2. Insert the support DVD to the optical drive or the 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 found, the utility
reads the BIOS le and starts ashing the corrupted BIOS le.
4. Turn off the system after the utility completes the updating process and turn 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 M5A78L/USB3 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 [16:34:30]
System Date [Tue 01/11/2011]
Primary IDE Master :[Not Detected]
Primary IDE Slave :[Not Detected]
SATA3G_1 :[Not Detected]
SATA3G_2 :[Not Detected]
SATA3G_3 :[Not Detected]
SATA3G_4 :[Not Detected]
SATA3G_5 :[Not Detected]
SATA3G_6 :[Not Detected]
SATA Conguration
System Information
Submenu items
Menu bar
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.
Conguration elds
M5A78L/USB3 BIOS Setup
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
Version 0313
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 M5A78L/USB3 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> arrow
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 1985-2011, American, American Megatrends, Inc.
M5A78L/USB3 BIOS Setup
Options
S1 (POS) only
S3 only
Auto
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 Option
F1 General Help
F10 Save and Exit
ESC Exit
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.
Version 0313
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 [16:34:30]
System Date [Tue 01/11/2011]
Primary IDE Master :[Not Detected]
Primary IDE Slave :[Not Detected]
SATA3G_1 :[Not Detected]
SATA3G_2 :[Not Detected]
SATA3G_3 :[Not Detected]
SATA3G_4 :[Not Detected]
SATA3G_5 :[Not Detected]
SATA3G_6 :[Not Detected]
SATA Conguration
System Information
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.
M5A78L/USB3 BIOS Setup
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a eld.
Use [+] or [-] to
congure system
Time.
Select Item
+-
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit
Version 0313
Select Screen
Change Field
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 Primary IDE Master/Slave, SATA3G_1/2/3/4/5/6
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/SATA drive. Setting this item to [Auto] allows automatic selection of
the appropriate IDE/SATA 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 and SATA5/6 menus.
ASUS M5A78L/USB3 2-7
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]
2.3.4 SATA Conguration
The SATA Conguration menu allows you to congure your storage devices. Select an item
then press <Enter> to display the submenu.
OnChip SATA Channel [Enabled]
Enables or disables onboard channel SATA port. Conguration options: [Disabled] [Enabled]
The following two items only appear when you set OnChip SATA Channel to [Enabled].
SATA Port1 - Port4 [IDE]
Allows you to set the SATA conguration.
[IDE] Set to [IDE] when you want to use the Serial ATA hard disk drives as
[RAID] Set to [RAID] when you want to create a RAID conguration from the SATA
[AHCI] Set to [AHCI] when you want the SATA hard disk drives to use the AHCI
2-8 Chapter 2: BIOS information
Parallel ATA physical storage devices.
hard disk drives.
(Advanced Host Controller Interface). The AHCI allows the onboard
storage driver to enable advanced Serial ATA features that increases
storage performance on random workloads by allowing the drive to
internally optimize the order of commands.
• When this item is set to [AHCI], the information of the SATA connectors 1–6 can be seen
only under the OS environment or during POST.
• For Windows® XP OS, you have to install the AHCI driver, so that you could use the
SATA connectors 1–6 in AHCI mode under the OS environment.
SATA Port5 - Port6 [IDE]
Setting this item to [IDE] instead of [RAID] or [AHCI] allows the system to recognize the optical
dirves connected to the SATA connectors 5 or 6 when installing OS.
If you use a SATA optical drive to run the OS installation disk, we strongly recommend that
you install the optical dirve to the SATA connectors 5/6 and set them to [IDE] mode.
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.
ASUS M5A78L/USB3 2-9
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 1985-2011, American Megatrends, Inc.
M5A78L/USB3 BIOS Setup
Adjust System
Frequency/Voltage etc.
Select Item
Enter Go to Sub Screen
F1 General Help
F10 Save and Exit
ESC Exit
Version 0313
Select Screen
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] [Overclock Prole] [Test Mode]
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.=550]
The following item only appears when you set CPU Overclocking to [Overclock Prole].
Overclock Options [Auto]
Selects the overclocking prole. Conguration options: [Auto] [Overclock 2%] [Overclock 5%]
[Overclock 8%] [Overclock 10%]
2-10 Chapter 2: BIOS information
PCIE Overclocking [Auto]
Congures the PCIE overclocking. Conguration options: [Auto] [Manual]
The following item only appears when you set PCIE Overclocking to [Manual].
PCIE Clock [100]
Sets the PCIE Clock. Conguration options: [Min.=100] [Max.=150]
CPU Ratio [Auto]
Sets the CPU ratio. Conguration options: [Auto] [x4.0 800MHz] [x4.5 900MHz] [x5.0
1000MHz] [x5.5 1100MHz] ~ [x13.0 2600MHz] [x13.5 2700MHz] [x14.0 2800MHz] [x14.5
2900MHz] [x15.0 3000MHz]
CPU/NB Frequency [Auto]
Sets the CPU/Northbridge frequency. Conguration options: [Auto] [800MHz] [1000MHz]
[1200MHz] [1400MHz] [1600MHz] [1800MHz] [2000MHz]
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]
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.
HT Link Speed [Auto]
Sets the HyperTransport link speed. Conguration options: [Auto] [200MHz] [400MHz]
[600MHz] [800MHZ] [1000MHz] [1600MHz] [1800MHz] [2000MHz]
HT Over Voltage [Auto]
Sets the HT over voltage. The values range from 1.20000V to 1.38000V with a 0.01000V
increment. Use the <+> / <-> keys to adjust the value. Conguration options: [Auto]
[Max. = 1.38000V] [Min. = 1.20000V]
DRAM Timing Cong [Auto]
Conguration options: [Auto] [Manual]
The following item only appears when you set DRAM Timing Cong to [Manual].
Memory Clock Speed [400MHz]
Selects the memory clock frequency programming method.
Conguration options: [400MHz] [533MHz] [667MHz] [800MHz]
ASUS M5A78L/USB3 2-11
DRAM Timing Conguration
The conguration options for some of the following items vary depending on the DIMMs
you install on the motherboard.
DRAM CAS# Latency [Auto]
Conguration options: [Auto] [4 CLK] ~ [12 CLK]
DRAM RAS# to CAS# Delay [Auto]
Conguration options: [Auto] [5 CLK] ~ [12 CLK]
DRAM RAS# PRE Time [Auto]
Conguration options: [Auto] [5 CLK] ~ [12 CLK]
DRAM RAS# ACT Time [Auto]
Conguration options: [Auto] [15 CLK] ~ [30 CLK]
DRAM READ to PRE Time [Auto]
Conguration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]
DRAM Row Cycle Time [Auto]
Conguration options: [Auto] [12 CLK] ~ [42 CLK]
DRAM WRITE Recovery Time [Auto]
Conguration options: [Auto] [5 CLK] [6 CLK] [7 CLK] [8 CLK] [10 CLK] [12 CLK]
DRAM RAS# to RAS# Delay [Auto]
Conguration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]
DRAM READ to WRITE Delay [Auto]
Conguration options: [Auto] [3 CLK] ~ [17 CLK]
DRAM WRITE to READ Delay(DD) [Auto]
Conguration options: [Auto] [2 CLK] ~ [10 CLK]
DRAM WRITE to READ Delay(SD) [Auto]
Conguration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]
DRAM WRITE to WRITE Timing [Auto]
Conguration options: [Auto] [2 CLK] ~ [10 CLK]
DRAM READ to READ Timing [Auto]
Conguration options: [Auto] [3 CLK] ~ [10 CLK]
DRAM REF Cycle Time [Auto]
Conguration options: [Auto] [90ns] [110ns] [160ns] [300ns] [350ns]
DRAM Refresh Rate [Auto]
Conguration options: [Auto] [Every 7.8ms] [Every 3.9ms]
DRAM Command Rate [Auto]
Conguration options: [Auto] [1T] [2T]
Memory Over Voltage [Auto]
Sets the memory over voltage. The values range from 1.3500V to 2.3000V with a 0.0100V
increment. Use the <+> / <-> keys to adjust the value.
Chipset Over Voltage [Auto]
Sets the chipset over voltage. The values range from 1.10000V to 1.60000V with a 0.01000V
increment. Use the <+> / <-> keys to adjust the value.
2-12 Chapter 2: BIOS information
PCI/PCIe CLK Status [Enabled]
Enables or disables the clock for PCI/PCIe slots. Conguration options: [Disabled] [Enabled]
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]
C1E Support [Disabled]
Enables or disables the CPU Enhanced Halt (C1E) function, a CPU power-saving function
in system halt state. When this item is enabled, the CPU core frequency and voltage will be
reduced during the system halt state to decrease power consumption.
Conguration options: [Disabled] [Enabled]
Advanced Clock Calibration [Disabled]
Adjusts the processor’s overclocking capability. When this item is set to [Auto], the BIOS
automatically adjusts this function. When this item is set to [All Cores], the processor has
the best overclocking performance. When this item is set to [Per Core], the processor’s
overclocking capability is enhanced. Conguration options: [Disabled] [Auto] [All Cores]
[Per Core]
The following items only appear when you set Advanced Clock Calibration to [Auto],
[All Cores], or [Per Core].
Unleashing Mode [Disabled]
Enable the Unleashing Mode to get full computing power of the processor. However, this might
make your system unstable depending on your processor’s overclocking capability. Conguration
options: [Enabled] [Disabled]
Active CPU Cores [Auto]
Allows you to manually turn ON/OFF a process core. Conguration options: [Auto] [Manual]
2nd / 3rd / 4th Core [On]
These items only appear when you set Active CPU Cores to [Manual].
Conguration options: [On] [Off]
ASUS M5A78L/USB3 2-13
Value (All Cores) [-2%]
This item only appears when you set Advanced Clock Calibration to [All Cores]. It
allows you to set the overclocking percentage for all the processor cores as a whole.
Conguration options: [0%] [+2%] [+4%] [+6%] [+8%] [+10%] [+12%] [-2%] [-4%][-2%] [-4%]
[-6%] [-8%] [-10%] [-12%]
Value (Core 0) / (Core 1) / (Core 2) / (Core 3) [-2%]
These items only appear when you set Advanced Clock Calibration to [Per Core]
and allow you to set the overclocking percentage for each process core separately.
Conguration options: [0%] [+2%] [+4%] [+6%] [+8%] [+10%] [+12%] [-2%] [-4%]
[-6%] [-8%] [-10%] [-12%]
2.4.3 Chipset
NorthBridge Conguration
DRAM Controller Conguration
Bank Interleaving [Auto]
Allows you to enable the bank memory interleaving. Conguration options: [Disabled] [Auto]
Node Interleaving [Disabled]
Allows you to enable the node memory interleaving. Conguration options: [Disabled] [Auto]
Channel Interleaving [Auto]
Allows you to enable the channel memory interleaving. Conguration options: [Disabled] [Auto]
Memory Hole Remapping [Enabled]
Allows you to enable or disable memory remapping around memory hole.
Conguration options: [Disabled] [Enabled]
Power Down Enable [Auto]
Allows you to enable or disable DDR power down mode.
Conguration options: [Auto] [Disabled] [Enabled]
ECC Conguration
ECC Mode [Disabled]
Enables or disables the DRAM ECC that allows the hardware to report and correct memory errors
automatically. Conguration options: [Disabled] [Basic] [Good] [Super] [Max] [User]
Internal Graphics
Primary Video Controller [GFX0-GPP-PCI]
Selects the primary display adapter. Conguration options: [GFX0-GPP-PCI] [GPP-GFX0-
PCI] [PCI-GFX0-GPP]
GFX0: primary video controller on a PCIe x16 slot
GPP: primary video controller on a PCIe x1 slot
PCI: primary video controller on a PCI slot
Hybrid Crossre [Disabled]
Enables or disables the Hybird Crossre function. Conguration options: [Enabled [Disabled]
2-14 Chapter 2: BIOS information
UMA Frame Buffer Size [Auto]
This item appears only when the previous item is set to [Enabled]. Selects the UMA frame buffer
size. Conguration options: [Auto] [32MB] [64MB] [128MB] [256MB] [512MB] [1GB]
• The [512MB] option only appears when you install 1GB system memory or more.
• The [1GB] option only appears when you install 2GB system memory or more.
Surround View [Auto]
Disables or enables the Surround View function. Conguration options: [Auto] [Disabled] [Enabled]
This item becomes user-congurable when you install an ATI graphics card into the
PCIe x16 slot.
Frame Buffer Location [Above 4G]
Conguration options: [Below 4G] [Above 4G]
2.4.4 Onboard Devices 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]
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]
Allows BIOS to select the Parallel Port IRQ. Conguration options: [IRQ5] [IRQ7]
HDAudio Controller [Enabled]
Enables or disables the high denition audio controller. Conguration options: [Disabled]
[Enabled]
Front Panel Select [HD Audio]
Allows you to set the front panel audio connector (AAFP) mode to legacy AC’97 or high-denition
audio depending on the audio standard that the front panel audio module supports. Conguration
options: [AC97] [HD Audio]
OnBoard LAN Controller [Enabled]
Enables or disables the onboard LAN controller. Conguration options: [Disabled] [Enabled]
OnBoard LAN Boot ROM [Disabled]
Enables or disables the onboard Gigabit LAN Boot ROM. Conguration options: [Disabled]
[Enabled]
USB 3.0 Controller [Enabled]
Enables or disables the onboard USB 3.0 controller. Conguration options: [Disabled]
[Enabled]
ASUS M5A78L/USB3 2-15
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]
2.4.6 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]
2-16 Chapter 2: BIOS information
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 1985-2011, American Megatrends, Inc.
M5A78L/USB3 BIOS Setup
Select the ACPI state
used for System
Suspend.
+- Change Option
F1 General Help
F10 Save and Exit
ESC Exit
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]
2.5.4 APM Conguration
Restore on AC Power Loss [Power Off]
When this item is set to [Power Off], the system goes into off state after an AC power loss.
When this item is set to [Power On], the system goes on after an AC power loss. When thisWhen this
item set to [Last State], the system goes into either off or on state, whatever the system
state was before the AC power loss. Conguration options: [Power Off] [Power On] [LastConguration options: [Power Off] [Power On] [Last
State]
Power on From S5 By PME# [Disabled]
Enables or disables PME wake from sleep states. Conguration options: [Disabled] [Enabled]
Power on From S5 By Ring [Disabled]
Enables or disables ring to generate a wake event. Conguration options: [Disabled]
[Enabled]
Version 0313
Select Screen
Select Item
ASUS M5A78L/USB3 2-17
Power on By PS/2 Keyboard [Disabled]
Enables or disables PS/2 Keyboard to generate a wake event.
Conguration options: [Disabled] [Space Bar] [Power Key] [Ctrl-Esc]
Power On By PS/2 Mouse [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 From S5 By RTC Alarm [Disabled]
Enables or disables RTC to generate a wake event. 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.
CPU Q-Fan Function [Enabled]
Enables or disables the ASUS Q-Fan feature that smartly adjusts the CPU fan speeds for
more efcient system operation. Conguration options: [Disabled] [Enabled]
The following item appears only when you set CPU Q-Fan Function to [Enabled].
CPU Fan Speed Low Limit [200 RPM]
Allows you to manually set a lower limit for the CPU fan speed. If the CPU fan speed is below the
specied limit, the system sends out warning beeps. Conguration options: [600 RPM] [500 RPM]
[400 RPM] [300 RPM] [200 RPM] [Ignored]
CPU Q-Fan Mode [Standard]
Allows you to set the appropriate performance level of the CPU fan.
[Standard] Sets to [Standard] to make the CPU fan automatically adjust depending on the
[Silent] Sets to [Silent] to minimize the fan speed for quiet CPU fan operation.
[Turbo] Set to [Turbo] to achieve maximum CPU fan speed.
[Manual] Allows you to individually set the CPU fan parameters.
CPU temperature.
2.5.6 Anti Surge Support [Enabled]
Allows you to enable or disable the Anti-Surge protection feature.
Conguration options: [Disabled] [Enabled]
2-18 Chapter 2: BIOS information
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 1985-2011, American Megatrends, Inc.
M5A78L/USB3 BIOS Setup
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 Item
Enter Go to Sub Screen
F1 General Help
F10 Save and Exit
ESC Exit
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.
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Select Screen
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.
AddOn ROM Display Mode [Force BIOS]
Sets the display mode for option ROM. Conguration options: [Force BIOS] [Keep Current]
ASUS M5A78L/USB3 2-19
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.
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.
2-20 Chapter 2: BIOS information
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]
ASUS M5A78L/USB3 2-21
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
Tools Settings
ASUS EZ Flash 2
ASUS O.C. Prole
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.
M5A78L/USB3 BIOS Setup
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 Item
Enter Go to Sub
Screen
F1 General Help
F10 Save and Exit
ESC Exit
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Select Screen
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. See section 2.1.2 for details.
2.7.2 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, key in
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> to
load the le.
Start O.C. Prole
Allows you to run the utility to save and load CMOS. Press <Enter> to run the utility.
• 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.
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.
M5A78L/USB3 BIOS Setup
Exit system setup
after saving the
cahnges.
F10 key can be used
for this operation.
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.
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ASUS M5A78L/USB3 2-23
2-24 Chapter 2: BIOS information
ASUS contact information
ASUSTeK COMPUTER INC.
Address 15 Li-Te Road, Peitou, Taipei, Taiwan 11259
Telephone +886-2-2894-3447
Fax +886-2-2890-7798
E-mail info@asus.com.tw
Web site www.asus.com.tw
Technical Support
Telephone +86-21-38429911
Online support support.asus.com
ASUS COMPUTER INTERNATIONAL (America)
Address 800 Corporate Way, Fremont, CA 94539, USA
Telephone +1-510-739-3777
Fax +1-510-608-4555
Web site usa.asus.com
Technical Support
Telephone +1-812-282-2787
Support fax +1-812-284-0883
Online support support.asus.com
ASUS COMPUTER GmbH (Germany and Austria)
Address Harkort Str. 21-23, D-40880 Ratingen, Germany
Fax +49-2102-959911
Web site www.asus.de
Online contact www.asus.de/sales
Technical Support
Telephone (Component) +49-1805-010923
Telephone (System/Notebook/Eee/LCD) +49-1805-010920
Support Fax +49-2102-9599-11
Online support support.asus.com
* EUR 0.14/minute from a German xed landline; EUR 0.42/minute from a mobile phone.
*
*
EC Declaration of Conformity
We, the undersigned,
Manufacturer:
ASUSTeK COMPUTER INC.
Address, City:
4F, No. 150, LI-TE Rd., PEITOU, TAIPEI 112, TAIWAN
Country:
TAIWAN
Authorized representative in Europe:
ASUS COMPUTER GmbH
Address, City:
HARKORT STR. 21-23, 40880 RATINGEN
Country:
GERMANY
declare the following apparatus:
Product name : Motherboard
Model name : M5A78L/USB3
conform with the essential requirements of the following directives:
2004/108/EC-EMC Directive
EN 55022:2010
EN 61000-3-2:2006+A2:2009
EN 55013:2001+A1:2003+A2:2006
EN 55024:2010
EN 61000-3-3:2008
EN 55020:2007+A11:2011
1999/5/EC-R &TTE Directive
EN 300 328 V1.7.1(2006-10)
EN 300 440-1 V1.6.1(2010-08)
EN 300 440-2 V1.4.1(2010-08)
EN 301 511 V9.0.2(2003-03)
EN 301 908-1 V5.2.1(2011-05)
EN 301 908-2 V5.2.1(2011-07)
EN 301 893 V1.6.1(2011-11)
EN 302 544-2 V1.1.1(2009-01)
EN 302 623 V1.1.1(2009-01)
EN 300 330-1 V1.7.1(2010-02)
EN 300 330-2 V1.5.1(2010-02)
EN 50360:2001
EN 62479:2010
EN 301 489-1 V1.9.2(2011-09)
EN 301 489-3 V1.4.1(2002-08)
EN 301 489-4 V1.4.1(2009-05)
EN 301 489-7 V1.3.1(2005-11)
EN 301 489-9 V1.4.1(2007-11)
EN 301 489-17 V2.1.1(2009-05)
EN 301 489-24 V1.5.1(2010-09)
EN 302 326-2 V1.2.2(2007-06)
EN 302 326-3 V1.3.1(2007-09)
EN 301 357-2 V1.4.1(2008-11)
EN 50385:2002
EN 62311:2008
2006/95/EC-LVD Directive
EN 60950-1 / A11:2009
EN 60950-1 / A12:2011
EN 60065:2002 / A2:2010
EN 60065:2002 / A12:2011
2009/125/EC-ErP Directive
Regulation (EC) No. 1275/2008
Regulation (EC) No. 642/2009
Regulation (EC) No. 278/2009
2011/65/EU-RoHS Directive Ver. 121001
CE marking
Declaration Date: Dec. 10, 2012
Year to begin affixing CE marking:2012
Position : CEO
Name : Jerry Shen
Signature : __________
(EC conformity marking)
DECLARATION OF CONFORMITY
Per FCC Part 2 Section 2. 1077(a)
Address: 800 Corporate Way, Fremont, CA 94539.
hereby declares that the product
Product Name : Motherboard
Conforms to the following specifications:
FCC Part 15, Subpart B, Unintentional Radiators
FCC Part 15, Subpart C, Intentional Radiators
FCC Part 15, Subpart E, Intentional Radiators
Supplementary Information:
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Signature :
Date : Apr. 25, 2011
Ver. 110101
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