Asus P5SD2-A User manual

Motherboard
P5SD2-A

ii
Copyright © 2009 ASUSTeK Computer Inc. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK Computer Inc. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS
MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or
copyrights of their respective companies, and are used only for identication or explanation and to the
owners’ benet, without intent to infringe.
E4449
Second Edition V2
January 2009

iii
Contents
Notices.......................................................................................................... v
Safety information ...................................................................................... vi
About this guide ......................................................................................... vi
P5SD2-A specications summary........................................................... viii
Chapter 1: Product introduction
1.1 Before you proceed ..................................................................... 1-1
1.2 Motherboard overview................................................................. 1-2
1.2.1 Motherboard layout ......................................................... 1-2
1.2.2 Layout contents............................................................... 1-2
1.3 Central Processing Unit (CPU) ................................................... 1-3
1.4 System memory ........................................................................... 1-3
1.4.1 Overview ......................................................................... 1-3
1.4.2 Memory congurations.................................................... 1-3
1.5 Expansion slots............................................................................ 1-6
1.5.1 PCI slot ........................................................................... 1-6
1.5.2 PCI Express x1 slot......................................................... 1-6
1.5.3 PCI Express x16 slot....................................................... 1-6
1.6 Jumpers ........................................................................................ 1-7
1.7 Connectors ................................................................................... 1-9
1.7.1 Rear panel ports ............................................................. 1-9
1.7.2 Internal connectors ....................................................... 1-10
1.8 Software support........................................................................ 1-16
1.8.1 Installing an operating system ...................................... 1-16
1.8.2 Support DVD information .............................................. 1-16
Chapter 2: BIOS information
2.1 Managing and updating your BIOS ............................................ 2-1
2.1.1 ASUS Update utility ........................................................ 2-1
2.1.2 ASUS EZ Flash 2 utility................................................... 2-2
2.1.3 ASUS CrashFree BIOS 3 utility ...................................... 2-3
2.2 BIOS setup program .................................................................... 2-4
2.3 Main menu .................................................................................... 2-4
2.3.1 System Time ................................................................... 2-4
2.3.2 System Date ................................................................... 2-4
2.3.3 Legacy Diskette A ........................................................... 2-5

iv
Contents
2.3.4 Primary IDE/SATA........................................................... 2-5
2.3.5 IDE Conguration............................................................ 2-5
2.3.6 System Information ......................................................... 2-6
2.4 Advanced menu ........................................................................... 2-6
2.4.1 JumperFree Conguration .............................................. 2-6
2.4.2 USB Conguration .......................................................... 2-7
2.4.3 CPU Conguration .......................................................... 2-8
2.4.4 Chipset............................................................................ 2-9
2.4.5 Onboard Devices Conguration...................................... 2-9
2.4.6 PCI PnP ........................................................................ 2-10
2.5 Power menu................................................................................ 2-10
2.5.1 Suspend Mode.............................................................. 2-10
2.5.2 ACPI 2.0 Support ...........................................................2-11
2.5.3 ACPI APIC Support........................................................2-11
2.5.4 APM Conguration.........................................................2-11
2.5.5 Hardware Monitor ..........................................................2-11
2.6 Boot menu .................................................................................. 2-12
2.6.1 Boot Device Priority ...................................................... 2-12
2.6.2 Boot Settings Conguration .......................................... 2-12
2.6.3 Security ......................................................................... 2-13
2.7 Tools menu ................................................................................. 2-14
2.7.1 ASUS EZ Flash 2.......................................................... 2-14
2.8 Exit menu.................................................................................... 2-15

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 modications 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.
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.

vi
Safety information
Electrical safety
• To prevent electric shock hazard, disconnect the power cable from the electric outlet
before relocating the system.
• When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
• Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
• Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
• Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
• If the power supply is broken, do not try to x it by yourself. Contact a qualied 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 at and stable surface.
• If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
About this guide
This user guide contains the information you need when installing and conguring 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 setup
This chapter tells how to change system settings through the BIOS setup menus.
Detailed descriptions of the BIOS parameters are also provided.

vii
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING:Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when trying to
complete a task.
NOTE: Tips and additional information to help you complete a task.
IMPORTANT: Instructions that you MUST follow to 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
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>
Command Means that you must type the command exactly as shown,
then supply the required item or value enclosed in brackets.
Example: At the DOS prompt, type the command line:
afudos /i[lename]
afudos /iP5SD2A.ROM

viii
P5SD2-A specications summary
(continued on the next page)
CPU LGA775 socket for Intel® Core™2 Duo / Pentium® D /
Pentium® 4 / Celeron®Processor
Support Intel®45nm Dual Core CPU
Compatible with Intel® 05B/05A/06 processors
Intel®EIST Hyper-Threading EM64T Technology ready
(Refer to www.asus.com for Intel CPU support list)
Chipset Northbridge: SIS 671DX / SIS672
Southbridge: SIS 968
Front Side Bus 1066 / 800 / 533MHz
Memory 2 x 240-pin DIMM sockets supports unbuffered non-ECC
4GB 667/533 MHz DDR2 memory modules
Expansion Slots 1 x PCI Express x16 slot
2 x PCI Express x1 slots
4 x PCI slots
Storage Southbridge SIS968 supports:
- 1 x UltraDMA 133 / 100 / 66 / 33 hard disk drives
- 2 x SATA 3 Gb/s ports with RAID 0,1 function
LAN PHY 10/100 LAN
Audio Realtek® ALC662 6-channel high-Denition Audio CODEC
Support Jack-detect & SPDIF-OUT interface
USB Max. 8 x USB2.0 ports (4 ports at mid-board, 4 ports at
back panel (optional)
ASUS Features ASUS CrashFree BIOS 3
ASUS Q-Fan
ASUS EZ Flash 2
ASUS MyLogo 2
BIOS 8 Mb Flash ROM, AMI BIOS, PnP, DMI2.0, Wfm2.0,
ACPI 2.0a, SM BIOS 2.4
Rear panel 1 x PS/2 keyboard port
1 x PS/2 mouse port
1 x Parallel port
2 x COM ports
1 x LAN (RJ-45) port
4 x USB 2.0/1.1 ports
6-channel audio I/O port

ix
P5SD2-A specications summary
*Specications are subject to change without notice.
Internal connectors 1 x Floppy disk drive connector
1 x IDE connector for two devices
2 x USB 2.0 connectors for 4 additional USB 2.0 ports
1 x CPU fan connector
1 x Chassis fan connector
1 x S/PDIF Out connector
1 x Chassis intrusion connector
1 x 4-pin internal speaker connector
1 x CD audio in connector
1 x Front panel audio connector
1 x 4-pin ATX 12V power connector
1 x System panel connector
Manageability WOL by PME, WOR by PME, PXE
Support DVD contents Drivers
ASUS PC Probe II
ASUS LiveUpdate utility
Anti-virus software (OEM)
Accessories 1 x Serial ATA cable
1 x Serial ATA power cable
1 x Ultra ATA 133/100/66 cable
1 x FDD cable
I/O shield
User manual
Form factor ATX form factor: 12 in x 7.4 in (30.5 cm x 18.8cm)

Thank you for buying an ASUS® P5SD2-A 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.
• Use a grounded wrist strap or touch a safely grounded object or a metal object, such
as the power supply case, before handling components 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, ensure that the ATX power supply is
switched off or the power cord is detached from the power supply. Failure to do so may
cause severe damage to the motherboard, peripherals, or components.
Chapter 1
Product introduction
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.
1-1 ASUS P5SD2-A

Place this side towards
the rear of the chassis.
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.
1.2.2 Layout contents
1.2 Motherboard overview
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.
Connectors/Jumpers/Slots Page Connectors/Jumpers/Slots Page
1. ATX power connectors (24-pin EATXPWR, 4-pin
ATX12V)
1-13 10. System panel connector (10-1 pin PANEL) 1-14
2. USB device wake-up (3-pin USBPW5-8) 1-7 11. USB connectors (10-1 pin USB56 and
USB78)
1-11
3. LGA775 CPU socket 1-3 12. Clear RTC RAM (3-pin CLRTC) 1-8
4. DDR2 DIMM slots 1-3 13. Chassis intrusion connector (4-1 pin
CHASSIS)
1-15
5. CPU, CHASSIS fan connectors
(4-pin CPU_FAN, 3-pin CHA_FAN)
1-12 14. Floppy disk drive connector (34-1 pin
FLOPPY)
1-10
6. IDE connector (40-pin PRI-EIDE) 1-11 15. Digital audio connector (4-1 pin
SPDIF_OUT)
1-15
7. Serial ATA connectors (7-pin SATA1 and SATA2) 1-10 16. Optical drive audio connector (4-pin CD) 1-14
8 Speaker connector (4-pin SPEAKER) 1-13 17. Front panel audio connector (10-1 pin
AAFP)
1-13
9. Onboard LED 1-1
Chapter 1: Product introduction 1-2

1.3 Central Processing Unit (CPU)
The motherboard comes with a surface mount LGA775 socket designed for the Intel®Core™
2 Duo/Pentium® D/Pentium®4 and Celeron® processors.
1.4 System memory
1.4.1 Overview
The motherboard comes with two Double Data Rate 2 (DDR2) Dual Inline Memory Modules
(DIMM) sockets.
The gure illustrates the location of the DDR2 DIMM sockets:
• Ensure that all power cables are unplugged before installing the CPU.
• Upon purchase of the motherboard, make sure 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
LGA775 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.
1.4.2 Memory congurations
You may install 512MB, 1GB, and 2GB unbuffered non-ECC DDR2 DIMMs into the DIMM
sockets.
1-3 ASUS P5SD2-A

• 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 conguration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.
• Always install DIMMs with the same CAS latency. For optimum compatibility, we
recommend that you obtain memory modules from the same vendor.
• Due to the memory address limitation on 32-bit Windows OS, when you install 4GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you install a 64-bit
Windows OS when having 4GB or more memory installed on the motherboard.
• Some old-version DDR2-667 DIMMs may not match Intel®’s On-Die-Termination (ODT)
requirement and will automatically downgrade to run at DDR2-533. If this happens,
contact your memory vendor to check the ODT value.
• Due to chipset limitation, DDR2-667 with CL=3 will be downgraded to run at DDR2-533
by default setting. If you want to operate with lower latency, adjust the memory timing
manually. There will be 4MB reduction in total memory when enabling ASUS Thermostat
function under Single Channel mode.
Qualied Vendors Lists (QVL)
DDR2 667 Qualied Vendors List
(continued on the next page)
Size Vendor Model Brand SS/DS Part NO. DIMM support
A* B*
256MB Kingston KVR667D2N5/256 Elpida SS E2508AB-6E-E • •
256MB Kingston KVR667D2N5/256 Kingston SS D3216TLSAKL3U • •
256MB Kingston KVR667D2N5/256 Inneon SS HYB18T256800AF3SW65 33154 • •
512MB Kingston KVR667D2N5/512 Kingston SS D6408TE8WL-27 • •
512MB Kingston KVR667D2N5/512 Elpida SS E5108AGBG-6E-E • •
1G Kingston KVR667D2N5/1G Kingston DS D6408TE8WL-3 • •
1G Kingston KVR667D2N5/1G Kingston DS D6408TEBGGL3U • •
1G Kingston KVR667D2N5/1G Elpida DS E5108AGBG-6E-E • •
512MB Samsung KR M378T6553CZ0-CE6 Samsung SS K4T51083QC • •
512MB Samsung KR M378T6453FZ0-CE6 Samsung DS K4T56083QF-ZCE6 • •
512MB Samsung M378T6553CZ3-CE6 Samsung SS K4T51083QC-ZCE6 • •
1G Samsung M378T2953CZ3-CE6 Samsung DS K4T51083QC-ZCE6 • •
1G Samsung KR M378T2953CZ0-CE6 Samsung DS K4T51083QC-ZCE6 • •
256MB Qimonda HYS64T32000HU-3S-A Qimonda SS HYB18T512160AF-3SSSS17310 • •
512MB Qimonda HYS64T32000HU-3S-A Qimonda SS HYB18T5128000AF-3SSSS27416 • •
512MB Qimonda HYS64T64000HU-3S-A Qimonda SS HYB18T512800AF3SFSS05346 • •
1G Qimonda HYS64T128020HU-3S-A Qimonda DS HYB18T512800AF3SSSS28104 • •
512MB Corsair VS512MB667D2 Corsair SS 64M8CFEGPS0900647 • •
512MB Corsair VS512MB667D2 Corsair DS MIII0052532M8CEC • •
1G Corsair VS1GB667D2 Corsair DS MID095D62864M8CEC • •
1G Corsair XMS2-5400 Corsair DS Heat-Sink Package • •
256MB HY HYMP532U64CP6-Y5 AB Hynix SS HY5PS121621CFP-Y5 • •
512MB HY HYMP564U64AP8-Y4 AA Hynix SS HY5PS12821AFP-Y4 • •
512MB HY HYMP564U64AP8-Y5 AA Hynix SS HY5PS12821AFP-Y5 • •
1G HY HYMP512U64AP8-Y5 AB Hynix DS HY5PS12821AFP-Y5 • •
1G HY HYMP512U64CP8-Y5 AB Hynix DS HY5PS12521CFP-Y5 • •
512MB Kingmax KLCC28F-A8EB5 Elpida SS E5108AE-6E-E • •
512MB Kingmax KLCC28F-A8KB5 Kingmax SS KKEA88B4LAUG-29DX • •
1G Kingmax KLCD48F-A8KB5 Kingmax DS KKEA88B4LAUG-29DX • •
Chapter 1: Product introduction 1-4

Size Vendor Model Brand SS/DS Part NO. DIMM support
A* B*
512MB Apacer 78.91092.420 Elpida SS E5108AE-6E-E • •
512MB Apacer AU512E667C5KBGC Apacer SS AM4B5708MIJS7E0627B • •
512MB Apacer AU512E667C5KBGC Apacer SS AM4B5708GQJS7E06332F • •
1G Apacer AU01GE667C5KBGC Apacer DS AM4B5708GQJS7E0636B • •
1G Apacer 78.01092.420 Elpida DS E5108AE-6E-E • •
1G Apacer AU01GE667C5KBGC Apacer DS AM4B5708MIJS7E0627B • •
512MB ADATA M20EL5G3H3160B1C0Z Elpida SS E5108AE-6E-E • •
512MB ADATA M20AD5G3H3166I1C52 ADATA SS AD29608A8A-3EG20648 • •
512MB ADATA M20AD5G3H3166I1C52 ADATA SS AD29608A8A-3EG20718 • •
1G ADATA M2OAD5G3I4176I1C52 ADATA DS AD29608A8A-3EG20645 • •
2G ADATA M2OAD5H3J4170I1C53 ADATA DS AD20908A8A-3EG 30724 • •
512MB VDATA M2GVD5G3H31A4I1C52 VDATA SS VD29608A8A-3EC20615 • •
512MB VDATA M2YVD5G3H31P4I1C52 VDATA SS VD29608A8A-3EG20627 • •
512MB VDATA M2GVD5G3H166I1C52 VDATA SS VD29608A8A-3EG20637 • •
1G VDATA M2GVD5G3I41P6I1C52 VDATA DS VD29608A8A-3EG20627 • •
1G VDATA M2GVD5G3I41C4I1C52 VDATA DS VD29608A8A-3EC20620 • •
1G VDATA M2GVD5G3I4176I1C52 VDATA DS VD29608A8A-3EG20641 • •
512MB PSC AL6E8E63B-6E1K PSC SS A3R12E3GEF637BLC5N • •
512MB PSC AL6E8E63J-6E1 PSC SS A3R12E3JFF717B9A00 • •
1G PSC AL7E8E63B-6E1K PSC DS A3R12E3GEF637BLC5N • •
1G PSC AL7E8E63J-6E1 PSC DS A3R12E3JFF717B9A01 • •
256MB Nanya NT256T64UH4A1FY-3C Nanya SS NT5TU32M16AG-3C • •
512MB Nanya NT512T64U88A1BY-3C Nanya SS NT5TU64M8AE-3C • •
1G PQI DDR2-667U 1G Hynix DS HY5PS12821BFP-E3 A • •
512MB TEAM TVDD512M667C5 TEAM SS T2D648MT-6 •
DDR2 533 Qualied Vendors List
Size Vendor Model Brand SS/DS Part NO. DIMM support
A* B*
256MB Kingston KVR533D2N4/256 Elpida SS E5116AB-5C-E • •
256MB Kingston KVR533D2N4/256 Elpida SS E5116AF-5C-E • •
512MB Kingston KVR533D2N4/512 Hynix DS HY5PS56821F-C4 • •
512MB Kingston KVR533D2N4/512 Inneon SS HYB18T512800AF3733336550 • •
1G Kingston KVR533D2N4/1G Kingston DS D6408TE7BL-37 • •
1G Kingston KVR533D2N4/1G Kingston DS D6408TLRAGL37U • •
256MB Samsung M378T3253FG0-CD5 Samsung SS K4T56083QF-GCD5 • •
512MB Samsung M378T6553BG0-CD5 Samsung SS K4T51083QB-GCD5 • •
256MB Qimonda HYS64T32000HU-3.7-A Qimonda SS HYB18T512160AF-3.7AFSS31270 • •
512MB Qimonda HYS64T64000GU-3.7-A Qimonda SS HYB18T512800AC37SSS11511 • •
512MB Qimonda HYS64T64000HU-3.7-A Qimonda SS HYB18T512800AF37SSS12079 • •
512MB Qimonda HYS64T64000HU-3.7-A Qimonda SS HYB18T512800AF37FSS29334 • •
256MB HY HYMP532U64CP6-C4 AB Hynix SS HY5PS121621CFP-C4 • •
1G HY HYMP512U64CP8-C4 AB Hynix DS HY5PS12821CFP-C4 • •
512MB Micron MT 16HTF6464AG-53EB2 Micron DS D9BOM • •
512MB Micron MT 16HTF6464AG-53EB2 Micron DS Z9BQT • •
1G Micron MT 16HTF12864AY-53EA1 Micron DS D9CRZ • •
512MB Corsair VS512MB533D2 Corsair DS MIII0052532M8CEC • •
512MB Corsair VS512MB533D2 Corsair DS MI110052532M8CEC • •
1G Corsair VS1GB533D2 Corsair DS 64M8CFEGQIB0900718 • •
512MB Elpida EBE51UD8ABFA-5C-E Elpida SS E5108AB-5C-E • •
512MB Kingmax KLBC28F-A8KB4 Kingmax SS KKEA88B4IAK-37 • •
256MB Kingmax KLBB68F-36EP4 Elpida SS E5116AB-5C-E • •
512MB Kingmax KLBC28F-A8EB4 Elpida SS E5108AE-5C-E • •
512MB ADATA M2OAD2G3H3166I1B52 ADATA SS AD29608A8A-37DG20719 • •
2G ADATA M20AD2H3J4170I1B53 ADATA DS AD20908A8A-37DG30721 • •
512MB AENEON AET660UD00-370A88S AENEON DS AET82F370A 0550 • •
1-5 ASUS P5SD2-A

1.5 Expansion slots
In the future, you may need to install expansion cards. Refer to the technical documentation
that come with your expansion card for installation details.
Ensure to unplug the power cord before adding or removing expansion cards. Failure to do
so may cause you physical injury and damage motherboard components.
1.5.1 PCI slot
The PCI slot supports cards such as LAN cards, SCSI cards, USB cards, and other cards
that comply with the PCI specications.
1.5.2 PCI Express x1 slot
This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that
comply with the PCI Express specications.
1.5.3 PCI Express x16 slot
This motherboard supports PCI Express x16 graphics cards that comply with the PCI
Express specications.
Visit the ASUS website at (www.asus.com) for the latest QVL.
SS - Single-sided / DS - Double - sided
DIMM support:
• A*: Supports one module inserted into any slot as Single-channel memory
conguration.
• B*: Supports one pair of modules inserted into the yellow slots as one pair of
Dual-channel memory conguration.
Chapter 1: Product introduction 1-6

• The USB device wake-up feature requires a power supply that can provide 500mA on
the +5VSB lead for the USB port. Otherwise, the system would not power up.
• The total current consumed must NOT exceed the power supply capability (+5VSB)
whether under normal condition or in sleep mode.
1.6 Jumpers
1. Keyboard/mouse/USB device wake-up (3-pin USBPW1-4, USBPW5-8, PS2_
USBPWR)
This jumper allows you to enable or disable the keyboard/mouse/USB device wake-up
feature. Set this jumper to +5V to wake up the computer from S1 sleep mode (CPU
stopped, DRAM refreshed, system running in low power mode) using the connected
keyboard, mouse or USB devices. Set to +5VSB to wake up from S3 and S4 sleep
modes (no power to CPU, DRAM in slow refresh, power supply in reduced power
mode).
1-7 ASUS P5SD2-A

2. 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 •words.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Remove the onboard battery.
3. 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.
4. Reinstall the battery.
5. Plug the power cord and turn ON the computer.
6. Hold down the <Del> key during the boot process and enter BIOS setup to re-
enter data.
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!
• If the steps above do not help, remove the onboard battery and move the jumper again
to clear the CMOS RTC RAM data. After the CMOS clearance, reinstall the battery.
• You do not need to clear the RTC when the system hangs due to overclocking. For
system failure due to overclocking, use the CPU Parameter Recall (C.P.R.) feature. Shut
down and reboot the system, then the BIOS automatically resets the parameter settings
to default values.
• Due to the chipset limitation, AC power off is required before you use the C.P.R.
function. You must turn off and on the power supply or unplug and plug the power cord
before rebooting the system.
Chapter 1: Product introduction 1-8

1.7 Connectors
1.7.1 Rear panel ports
1
11
4
5
6
7
2 3
8
10 9
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 10/100 PHY connection to a Local Area Network
(LAN) through a network hub.
LAN port LED indications
LAN port
LED
(Green)
LED
(Orange)
4. Line In port (light blue). This port connects to the tape, CD, DVD player, or other
audio sources.
5. Line Out port (lime). This port connects to a headphone or a speaker. In 4-channel
and 6-channel conguration, the function of this port becomes Front Speaker Out.
6. Microphone port (pink). This port connects to a microphone.
Refer to the audio conguration table below for the function of the audio ports in 2, 4, or
6-channel conguration.
Audio 2, 4, 6-channel conguration
7. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to
USB 2.0 devices.
8. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports connect to
USB 2.0 devices.
9. COM port. This 9-pin COM1 port is for pointing devices or other serial devices.
10. COM port. This 9-pin COM1 port is for pointing devices or other serial devices.
11. PS/2 Keyboard port. This port is for a PS/2 keyboard.
Port Headset 2-channel 4-channel 6-channel
Light Blue Line In Rear Speaker Out Rear Speaker Out
Lime Line Out Front Speaker Out Front Speaker Out
Pink Mic In Mic In Bass/Center
ORANGE LED GREEN LED
Status Description Status Description
OFF No link OFF No link
Orange 100 Mbps connection Green 10Mbps connection
1-9 ASUS P5SD2-A

1.7.2 Internal connectors
1. ICH7 Serial ATA connectors (7-pin SATA1, SATA2)
These connectors are for the Serial ATA signal cables for Serial ATA hard disk drives.
Connect the right-angle side of SATA
signal cable to SATA device. You may
also connect the right-angle side of
SATA cable to the onboard SATA port
to avoid mechanical conict with huge
graphics cards.
right angle side
2. Floppy disk drive connector (34-1 pin FLOPPY)
This connector is for the provided oppy disk drive (FDD) signal cable. Insert one end
of the cable to this connector, then connect the other end to the signal connector at the
back of the oppy disk drive.
Pin 5 on the connector is removed to prevent incorrect cable connection when using a FDD
cable with a covered Pin 5.
Chapter 1: Product introduction 1-10

3. IDE connector (40-1 pin PRI_IDE)
The onboard IDE connector is for the Ultra DMA 133/100/66 signal cable. There are
three connectors on each Ultra DMA 100/66/33 signal cable: blue, black, and gray.
Connect the blue connector to the motherboard’s IDE connector, then select one of the
following modes to congure your device.
Driver Jumper setting Mode of device(s) Cable connector
Single device Cable-Selected or Master - Black
Two devices Cable-Select Master Black
Slave Gray
Master Master Black or gray
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.
4. USB connectors (10-1 pin USB56, USB78)
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 specication that supports up to
480 Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB module
cable is purchased
separately.
1-11 ASUS P5SD2-A