No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
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permission of ASUSTeK Computer Inc. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
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Offer to Provide Source Code of Certain Software
This product contains copyrighted software that is licensed under the General Public License (“GPL”)
and under the Lesser General Public License Version (“LGPL”). The GPL and LGPL licensed code in this
product is distributed without any warranty. Copies of these licenses are included in this product.
You may obtain the complete corresponding source code (as dened in the GPL) for the GPL Software,
and/or the complete corresponding source code of the LGPL Software (with the complete machinereadable “work that uses the Library”) for a period of three years after our last shipment of the product
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In your request please provide the name, model number and version, as stated in the About Box of the
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This offer is valid to anyone in receipt of this information.
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etc to this email address).
ii
Contents
Notices .......................................................................................................... v
Safety information ...................................................................................... vi
About this guide ......................................................................................... vi
P7H55-M SI specications summary ...................................................... viii
Chapter 1: Product introduction
1.1 Before you proceed ..................................................................... 1-1
2.7 Tools menu ................................................................................. 2-20
ASUS EZ Flash 2 ......................................................................... 2-20
2.8 Exit menu .................................................................................... 2-21
iv
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
• This device may not cause harmful interference, and
• This device must accept any interference received including interference that may cause
undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required
to assure compliance with FCC regulations. Changes or modications to this unit not
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
This class B digital apparatus complies with Canadian ICES-003.
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://green.asus.com/english/REACH.htm
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.
v
Safety information
Electrical safety
• To prevent electric shock hazard, disconnect the power cable from the electric outlet
before relocating the system.
•
When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
•
Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
•
Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
• Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
• If the power supply is broken, do not try to x it by yourself. Contact a qualied service
technician or your retailer.
Operation safety
•
Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.
•
Before using the product, ensure that all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
•
To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
•
Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
•
Place the product on a stable surface.
•
If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
About this guide
This user guide contains the information you need when installing and conguring the
motherboard.
How this guide is organized
This guide contains the following parts:
• Chapter 1: Product introduction
This chapter describes the features of the motherboard and the new technology it
supports.
• Chapter 2: BIOS information
This chapter tells how to change system settings through the BIOS setup menus.
Detailed descriptions of the BIOS parameters are also provided.
vi
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.
2. Optional documentation
Your product package may include optional documentation, such as warranty yers,
that may have been added by your dealer. These documents are not part of the
standard package.
Typography
Bol d te xt Indicates a menu or an item to select.
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 keynames are linked with a plus sign (+).
Example: <Ctrl>+<Alt>+<D>
vii
P7H55-M SI specications summary
CPULGA1156 socket for Intel® Core™ i7/ Core™ i5 processors
ChipsetIntel® H55 Express Chipset
Memory4 x DIMM, max. 16GB, DDR3 1333/1066 MHz, non-ECC,
Expansion Slots1 x PCIe 2.0 x16 slot
GraphicsIntegrated Intel® Graphics Media Accelerator (Intel® GMA4500)
StorageIntel® H55 Express Chipset:
LANRTL8112L Gigabit LAN controller
AudioVIA VT1708S 8-channel High Denition Audio CODEC
USBSupports up to 12 USB 2.0 ports (6 ports at mid-board,
* When you install a total memory of 4GB capacity or more,
Windows® 32-bit operating system may only recognize less
than 3GB. We recommend a maximum of 3GB system
memory if you are using a Windows® 32-bit OS.
** Refer to www.asus.com for the latest Memory QVL
(Qualied Vendors List).
1 x PCIe 2.0 x1 slot
2 x PCI slots
support:
- D-SUB Max. resolution: 2048 x 1536 @75Hz
- DVI Max. resolution: 1920 x 1200 @60Hz
- HDMI Max. resolution: 1920 x 1200 @60Hz
Supports Microsoft® DirectX 10
- 6 x Serial ATA 3.0 Gb/s connectors
- 1 x Ultra DMA 133/100 connector
Supports Jack-Detection, Multi-streaming, and Anti-pop
function
6 ports at the back panel)
ASUS EZ Flash 2
ASUS Q-Fan2
ASUS MyLogo 2
ASUS CrashFree BIOS3
ASUS Anti Surge
viii
(continued on the next page)
P7H55-M SI specications summary
Back Panel I/O Ports1 x PS/2 Keyboard port
Internal I/O Connectors3 x USB 2.0/1.1 connectors support additional
BIOS64Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0,
ManageabilityWOL, PXE, PME Wake up, WOR by Ring
Accessories1 x UltraDMA 133/100 cable
Support DVDDrivers
Form FactoruATX form factor: 9.6 in x 9.6 in (24.4cm x 24.4cm)
1 x PS/2 Mouse port
1 x HDMI port
1 x DVI port
1 x VGA port
1 x COM port
1 x RJ45 port
6 x USB 2.0/1.1 ports
3 x Audio jacks
6 USB 2.0/1.1 ports
6 x SATA connectors
1 x S/PDIF Out connector
1 x COM connector
1 x CPU fan connector
1 x Chassis fan connector
1 x Front panel audio connector
1 x IDE connector
1 x TPM connector
1 x System panel connector
1 x LPT connector
1 x Floppy connector
1 x 24-pin EATX power connector
1 x 4-pin ATX 12V power connector
SM BIOS 2.5, ACPI2.0a, Multi-language BIOS
2 x Serial ATA 3.0Gb/s cables
1 x I/O shield
1 x Support DVD
1 x User Manual
ASUS PC Probe II
ASUS Update
Anti-Virus software (OEM version)
*Specications are subject to change without notice.
ix
x
Chapter 1
P7H55-M SI
SB_PWR
ON
Standby Power Powered Off
OFF
P7H55-M SI Onboard LED
Product introduction
Thank you for buying an ASUS® P7H55-M SI motherboard!
Before you start installing the motherboard, and hardware devices on it, check the items in
your motherboard package. Refer to page ix for the list of accessories.
If any of the items is damaged or missing, contact your retailer.
1.1 Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• Unplug the power cord from the wall socket before touching any component.
• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due to
static electricity
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.
• Before you install or remove any component, 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
This 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 must 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.
1-1ASUS P7H55-M SI
1.2 Motherboard overview
P7H55-M SI
FLOPPY
PCIEX16
PCIEX1_1
PCI2
PCI1
USB1112
USB910
USB78
AAFP
ATX12V
EATXPWR
CPU_FAN
Lithium Cell
CMOS Power
Super
I/O
VIA
VT1708S
RTL
8112L
ICS
9LRS954
KBMS
HDMI
COM1
8Mb
BIOS
SB_PWR
CLRTC
CHASSIS
24.4cm(9.6in)
24.4cm(9.6in)
Intel
®
GMA4500
DDR3 DIMM_B2 (64bit, 240-pin module)
DDR3 DIMM_B1 (64bit, 240-pin module)
DDR3 DIMM_A2 (64bit, 240-pin module)
DDR3 DIMM_A1 (64bit, 240-pin module)
SATA1
SATA2
SATA3
SATA4
SATA5
SATA6
DVI
AUDIO
VGA
LAN1_USB12
USB3_6
CHA_FAN
SPDIF_OUT
LGA1156
LPT
F_PANEL
PRI_IDE
TPM
COM2
234115
1110121314151617
8
2
7
6
9
1.2.1 Motherboard layout
Ensure that you install the motherboard into the chassis in the correct orientation. The edge
with external ports goes to the rear part of the chassis.
Place this side towards
the rear of the chassis.
Place eight 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.
1.2.2 Layout contents
Connectors/Jumpers/Slots/LED
1. CPU and Chassis fan connectors (4-pin CPU_FAN,
3-pin CHA_FAN)
2. ATX power connectors (24-pin EATXPWR, 4-pin
ATX12V)
3. Serial port connectors (10-1 pin COM2)
4. Intel® CPU socket
5. DDR3 DIMM sockets
6. TPM connector (20-1 pin TPM)
7. IDE connector (40-1 pin PRI_IDE)
8. Serial ATA connectors (7-pin SATA1-6)
9. System panel connector (10-1 pin F_PANEL)
Page Connectors/Jumpers/Slots/LED
1-12 10.
USB connectors (10-1 pin USB78, USB910,
USB1112)
1-13 11.
Onboard LED1-1
1-16 12.
Clear RTC RAM (3-pin CLRTC)1-8
1-3 14.
1-14 15.
1-17 16.
1-11 17.
1-14
13.
Chassis intrusion connector (4-1 pin
CHASSIS)
Floppy disk drive connector (34-1 pin
FLOPPY)
LPT connector (26-1 pin LPT)1-16
Digital audio connector (4-1 pin
SPDIF_OUT)
Front panel audio connector (10-1 pin AAFP) 1-15
Chapter 1: Product introduction1-2
Page
1-10
1-12
1-15
1-11
1.3 Central Processing Unit (CPU)
P7H55-M SI
P7H55-M SI 240-pin DDR3 DIMM sockets
DIMM_A2
DIMM_A1
DIMM_B2
DIMM_B1
This motherboard comes with a surface mount LGA1156 socket designed for the
Intel® Core™ i7 / Core™ i5 processors.
Ensure that all power cables are unplugged before installing the CPU.
• Upon purchase of the motherboard, ensure that the PnP cap is on the socket and the
socket contacts are not bent. Contact your retailer immediately if the PnP cap is missing,
or if you see any damage to the PnP cap/socket contacts/motherboard components.
ASUS will shoulder the cost of repair only if the damage is shipment/transit-related.
• Keep the cap after installing the motherboard. ASUS will process Return Merchandise
Authorization (RMA) requests only if the motherboard comes with the cap on the
LGA1156 socket.
• The product warranty does not cover damage to the socket contacts resulting from
incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP
cap.
1.4 System memory
1.4.1 Overview
This motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Module
(DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR3 DIMM but is notched
differently to prevent installation on a DDR3 DIMM socket. DDR3 modules are developed
for better performance with less power consumption. The gure illustrates the location of the
DDR3 DIMM sockets:
1-3ASUS P7H55-M SI
1.4.2 Memory congurations
You may install 1GB, 2GB, and 4GB unbuffered non-ECC DDR3 DIMMs into the DIMM
sockets.
• You may install varying memory sizes in Channel A and Channel B. The system maps
the total size of the lower-sized channel for the dual-channel conguration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.
• For dual-channel conguration, you can:
- install two identical DIMMs in DIMM_A1 and DIMM_B1; or
- install four identical DIMMs in all four slots; or
- install one identical DIMM pair in DIMM_A1 and DIMM_B1 (blue slots) and
another identical DIMM pair in DIMM_A2 and DIMM_B2 (black slots).
• Due to the memory address limitation on the 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 either of the
following:
Voltage
1.85V
1.85V
voltage)
®
DIMM
Support
A* B* C*
• • •
• • •
• • •
- 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 256 megabits (Mb) chips or less.
P7H55-M SI Motherboard Qualied Vendors List (QVL)