MSI 990XA-GD55 series User manual

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990XA-GD55
seres
MS-7640 (v4.x) Manboard
G52-76401XP

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Copyrght Notce
The materal n ths document s the ntellectual property of MICRO-STAR INTERNA-
TIONAL. We take every care n the preparaton of ths document, but no guarantee s
gven as to the correctness of ts contents. Our products are under contnual mprove-
ment and we reserve the rght to make changes wthout notce.
Trademarks
All trademarks are the propertes of ther respectve owners.
MSI® s regstered trademark of Mcro-Star Int’l Co.,Ltd.
NVIDIA® s regstered trademark of NVIDIA Corporaton.
ATI® s regstered trademark of AMD Corporaton.
AMD® s regstered trademarks of AMD Corporaton.
Intel® s regstered trademarks of Intel Corporaton.
Wndows® s regstered trademarks of Mcrosoft Corporaton.
AMI® s regstered trademark of Amercan Megatrends Inc.
Award® s a regstered trademark of Phoenx Technologes Ltd.
Sound Blaster® s regstered trademark of Creatve Technology Ltd.
Realtek® s regstered trademark of Realtek Semconductor Corporaton.
JMcron® s regstered trademark of JMcron Technology Corporaton.
Netware® s regstered trademark of Novell, Inc.
Lucd® s trademark of LucdLogx Technologes, Ltd.
VIA® s regstered trademark of VIA Technologes, Inc.
ASMeda® s regstered trademark of ASMeda Technology Inc.
Pad, Phone, and Pod are trademarks of Apple Inc.
Revson Hstory
Revson Revson Hstory Date
V4.0 For PCB v4.X 2011/07
Techncal Support
If a problem arses wth your system and no soluton can be obtaned from the user’s
manual, please contact your place of purchase or local dstrbutor. Alternatvely, please
try the followng help resources for further gudance.
Vst the MSI webste for techncal gude, BIOS updates, drver updates, and
other nformaton:
http://www.ms.com/servce/download/
Contact our techncal sta󰘯 at: http://support.ms.com/
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Safety Instructons
Always read the safety nstructons carefully.
Keep ths User’s Manual for future reference.
Keep ths equpment away from humdty.
Lay ths equpment on a relable 󰘱at surface before settng t up.
The openngs on the enclosure are for ar convecton hence protects the equpment
from overheatng. DO NOT COVER THE OPENINGS.
Make sure the voltage of the power source and adjust properly 110/220V before
connectng the equpment to the power nlet.
Place the power cord such a way that people can not step on t. Do not place any-
thng over the power cord.
Always Unplug the Power Cord before nsertng any add-on card or module.
All cautons and warnngs on the equpment should be noted.
Never pour any lqud nto the openng that could damage or cause electrcal
shock.
If any of the followng stuatons arses, get the equpment checked by servce
personnel:
The power cord or plug s damaged.
Lqud has penetrated nto the equpment.
The equpment has been exposed to mosture.
The equpment does not work well or you can not get t work accordng to User’s
Manual.
The equpment has dropped and damaged.
The equpment has obvous sgn of breakage.
DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT UNCONDITIONED,
STORAGE TEMPERATURE ABOVE 60oC (140oF), IT MAY DAMAGE THE EQUIP-
MENT.
CAUTION: Danger of exploson f battery s ncorrectly replaced.
Replace only wth the same or equvalent type recommended by the manufacturer.
警告使用者:
這是甲類資訊產品，在居住的環境中使用時，可能會造成無線電干擾，在這種情況下，
使用者會被要求採取某些適當的對策。
廢電池請回收
For better envronmental protecton, waste batteres should be
collected separately for recyclng or specal dsposal.
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FCC-B Rado Frequency Interference Statement
Ths equpment has been tested and found
to comply wth the lmts for a Class B dg-
tal devce, pursuant to Part 15 of the FCC
Rules. These lmts are desgned to provde
reasonable protecton aganst harmful nter-
ference n a resdental nstallaton. Ths equpment generates, uses and can radate
rado frequency energy and, f not nstalled and used n accordance wth the nstruc-
tons, may cause harmful nterference to rado communcatons. However, there s no
guarantee that nterference wll not occur n a partcular nstallaton. If ths equpment
does cause harmful nterference to rado or televson recepton, whch can be deter-
mned by turnng the equpment o󰘯 and on, the user s encouraged to try to correct the
nterference by one or more of the measures lsted below.
Reorent or relocate the recevng antenna.
Increase the separaton between the equpment and recever.
Connect the equpment nto an outlet on a crcut d󰘯erent from that to whch the
recever s connected.
Consult the dealer or an experenced rado/televson techncan for help.
Notce 1
The changes or mod󰘰catons not expressly approved by the party responsble for com-
plance could vod the user’s authorty to operate the equpment.
Notce 2
Shelded nterface cables and A.C. power cord, f any, must be used n order to comply
wth the emsson lmts.
VOIR LA NOTICE D’INSTALLATION AVANT DE RACCORDER AU RESEAU.
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Ths devce comples wth Part 15 of the FCC Rules. Operaton s subject to the follow-
ng two condtons:
ths devce may not cause harmful nterference, and
ths devce must accept any nterference receved, ncludng nterference that may
cause undesred operaton.
1)
2)
Mcro-Star Internatonal
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WEEE (Waste Electrcal and Electronc Equpment) Statement
ENGLISH
To protect the global envronment and as an envronmentalst, MSI must re-
mnd you that...
Under the European Unon (“EU”) Drectve on Waste Electrcal and Electron-
c Equpment, Drectve 2002/96/EC, whch takes e󰘯ect on August 13, 2005,
products of “electrcal and electronc equpment” cannot be dscarded as muncpal
waste anymore and manufacturers of covered electronc equpment wll be oblgated to
take back such products at the end of ther useful lfe. MSI wll comply wth the product
take back requrements at the end of lfe of MSI-branded products that are sold nto the
EU. You can return these products to local collecton ponts.
DEUTSCH
Hnwes von MSI zur Erhaltung und Schutz unserer Umwelt
Gemäß der Rchtlne 2002/96/EG über Elektro- und Elektronk-Altgeräte dürfen Elek-
tro- und Elektronk-Altgeräte ncht mehr als kommunale Abfälle entsorgt werden. MSI
hat europawet verschedene Sammel- und Recyclngunternehmen beauftragt, de n
de Europäsche Unon n Verkehr gebrachten Produkte, am Ende senes Lebenszyklus
zurückzunehmen. Btte entsorgen Se deses Produkt zum gegebenen Zetpunkt aus-
schlesslch an ener lokalen Altgerätesammelstelle n Ihrer Nähe.
FRANÇAIS
En tant qu’écologste et a󰘰n de protéger l’envronnement, MSI tent à rappeler cec...
Au sujet de la drectve européenne (EU) relatve aux déchets des équpement élec-
trques et électronques, drectve 2002/96/EC, prenant e󰘯et le 13 août 2005, que les
produts électrques et électronques ne peuvent être déposés dans les décharges ou
tout smplement ms à la poubelle. Les fabrcants de ces équpements seront oblgés de
récupérer certans produts en 󰘰n de ve. MSI prendra en compte cette exgence relatve
au retour des produts en 󰘰n de ve au sen de la communauté européenne. Par con-
séquent vous pouvez retourner localement ces matérels dans les ponts de collecte.
РУССКИЙ
Компания MSI предпринимает активные действия по защите окружающей среды,
поэтому напоминаем вам, что....
В соответствии с директивой Европейского Союза (ЕС) по предотвращению
загрязнения окружающей среды использованным электрическим и электронным
оборудованием (директива WEEE 2002/96/EC), вступающей в силу 13
августа 2005 года, изделия, относящиеся к электрическому и электронному
оборудованию, не могут рассматриваться как бытовой мусор, поэтому
производители вышеперечисленного электронного оборудования обязаны
принимать его для переработки по окончании срока службы. MSI обязуется
соблюдать требования по приему продукции, проданной под маркой MSI на
территории EC, в переработку по окончании срока службы. Вы можете вернуть
эти изделия в специализированные пункты приема.

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ESPAÑOL
MSI como empresa comprometda con la proteccón del medo ambente, recomenda:
Bajo la drectva 2002/96/EC de la Unón Europea en matera de desechos y/o equ-
pos electróncos, con fecha de rgor desde el 13 de agosto de 2005, los productos
clas󰘰cados como “eléctrcos y equpos electróncos” no pueden ser depostados en
los contenedores habtuales de su muncpo, los fabrcantes de equpos electróncos,
están oblgados a hacerse cargo de dchos productos al termno de su período de vda.
MSI estará comprometdo con los térmnos de recogda de sus productos venddos en
la Unón Europea al 󰘰nal de su perodo de vda. Usted debe depostar estos productos
en el punto lmpo establecdo por el ayuntamento de su localdad o entregar a una
empresa autorzada para la recogda de estos resduos.
NEDERLANDS
Om het mleu te beschermen, wl MSI u eraan hernneren dat….
De rchtljn van de Europese Une (EU) met betrekkng tot Vervulng van Electrsche
en Electronsche producten (2002/96/EC), de op 13 Augustus 2005 n zal gaan kun-
nen net meer beschouwd worden als vervulng. Fabrkanten van dt soort producten
worden verplcht om producten retour te nemen aan het end van hun levenscyclus.
MSI zal overeenkomstg de rchtljn handelen voor de producten de de merknaam MSI
dragen en verkocht zjn n de EU. Deze goederen kunnen geretourneerd worden op
lokale nzamelngspunten.
SRPSKI
Da b zašttl prrodnu srednu,  kao preduzeće koje vod računa o okoln  prrodnoj
sredn, MSI mora da vas podest da…
Po Drektv Evropske unje (“EU”) o odbačenoj ekektronskoj  elektrčnoj oprem, D-
rektva 2002/96/EC, koja stupa na snagu od 13. Avgusta 2005, prozvod koj spadaju
pod “elektronsku  elektrčnu opremu” ne mogu vše bt odbačen kao občan otpad 
prozvođač ove opreme bće prnuđen da uzmu natrag ove prozvode na kraju njhovog
uobčajenog veka trajanja. MSI će poštovat zahtev o preuzmanju ovakvh prozvoda
kojma je stekao vek trajanja, koj maju MSI oznaku  koj su prodat u EU. Ove proz-
vode možete vratt na lokalnm mestma za prkupljanje.
POLSKI
Aby chronć nasze środowsko naturalne oraz jako 󰘰rma dbająca o ekologę, MSI przy-
pomna, że...
Zgodne z Dyrektywą Un Europejskej (“UE”) dotyczącą odpadów produktów elektry-
cznych  elektroncznych (Dyrektywa 2002/96/EC), która wchodz w życe 13 serpna
2005, tzw. “produkty oraz wyposażene elektryczne  elektronczne “ ne mogą być trak-
towane jako śmec komunalne, tak węc producenc tych produktów będą zobowązan
do odberana ch w momence gdy produkt jest wycofywany z użyca. MSI wypełn
wymagana UE, przyjmując produkty (sprzedawane na terene Un Europejskej) wy-
cofywane z użyca. Produkty MSI będze można zwracać w wyznaczonych punktach
zborczych.

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TÜRKÇE
Çevrec özellğyle blnen MSI dünyada çevrey korumak çn hatırlatır:
Avrupa Brlğ (AB) Kararnames Elektrk ve Elektronk Malzeme Atığı, 2002/96/EC
Kararnames altında 13 Ağustos 2005 tarhnden tbaren geçerl olmak üzere, elektrkl
ve elektronk malzemeler dğer atıklar gb çöpe atılamayacak ve bu elektonk chazların
üretcler, chazların kullanım süreler bttkten sonra ürünler ger toplamakla yükümlü
olacaktır. Avrupa Brlğ’ne satılan MSI markalı ürünlern kullanım süreler bttğnde MSI
ürünlern ger alınması steğ le şbrlğ çersnde olacaktır. Ürünlernz yerel toplama
noktalarına bırakablrsnz.
ČESKY
Záleží nám na ochraně žvotního prostředí - společnost MSI upozorňuje...
Podle směrnce Evropské une (“EU”) o lkvdac elektrckých a elektronckých výrobků
2002/96/EC platné od 13. srpna 2005 je zakázáno lkvdovat “elektrcké a elektroncké
výrobky” v běžném komunálním odpadu a výrobc elektronckých výrobků, na které se
tato směrnce vztahuje, budou povnn odebírat takové výrobky zpět po skončení je-
jch žvotnost. Společnost MSI splní požadavky na odebírání výrobků značky MSI,
prodávaných v zemích EU, po skončení jejch žvotnost. Tyto výrobky můžete odevzdat
v místních sběrnách.
MAGYAR
Annak érdekében, hogy környezetünket megvédjük, lletve környezetvédőként fellépve
az MSI emlékeztet Önt, hogy ...
Az Európa Unó („EU”) 2005. augusztus 13-án hatályba lépő, az elektromos és elek-
tronkus berendezések hulladékaról szóló 2002/96/EK rányelve szernt az elektromos
és elektronkus berendezések többé nem kezelhetőek lakosság hulladékként, és az
lyen elektronkus berendezések gyártó kötelessé válnak az lyen termékek vsszavé-
telére azok hasznos élettartama végén. Az MSI betartja a termékvsszavétellel kapc-
solatos követelményeket az MSI márkanév alatt az EU-n belül értékesített termékek
esetében, azok élettartamának végén. Az lyen termékeket a legközelebb gyűjtőhelyre
vhet.
ITALIANO
Per proteggere l’ambente, MSI, da sempre amca della natura, t rcorda che….
In base alla Drettva dell’Unone Europea (EU) sullo Smaltmento de Materal Elettrc
ed Elettronc, Drettva 2002/96/EC n vgore dal 13 Agosto 2005, prodott appartenent
alla categora de Materal Elettrc ed Elettronc non possono pù essere elmnat come
r󰘰ut muncpal:  produttor d dett materal saranno obblgat a rtrare ogn prodotto
alla 󰘰ne del suo cclo d vta. MSI s adeguerà a tale Drettva rtrando tutt  prodott
marchat MSI che sono stat vendut all’nterno dell’Unone Europea alla 󰘰ne del loro
cclo d vta. È possble portare  prodott nel pù vcno punto d raccolta

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CONTENTS
Copyrght Notce ............................................................................................. 
Trademarks .................................................................................................... 
Revson Hstory.............................................................................................. 
Techncal Support........................................................................................... 
Safety Instructons ..........................................................................................
FCC-B Rado Frequency Interference Statement.......................................... v
WEEE (Waste Electrcal and Electronc Equpment) Statement .................... v
Englsh ...................................................................................................... En-1
Manboard Spec󰘰catons ...................................................................................En-2
Quck Components Gude ..................................................................................En-4
Screw Holes .......................................................................................................En-5
CPU (Central Processng Unt) ..........................................................................En-6
Memory ..............................................................................................................En-9
Power Supply ...................................................................................................En-11
Back Panel .......................................................................................................En-12
Connectors .......................................................................................................En-14
Jumper .............................................................................................................En-19
Slots .................................................................................................................En-20
LED Status Indcators ......................................................................................En-21
BIOS Setup ......................................................................................................En-23
Software Informaton ........................................................................................En-32
한국어 ........................................................................................................ Kr-1
메인보드 사양 ..................................................................................................... Kr-2
빠른 부품 설명서 ................................................................................................ Kr-4
스크루 홀 ............................................................................................................ Kr-5
CPU (중앙 처리 장치) ......................................................................................... Kr-6
메모리 ................................................................................................................ Kr-9
전원 공급장치 ................................................................................................... Kr-11
후면 패널 .......................................................................................................... Kr-12
커넥터 .............................................................................................................. Kr-14
점퍼 .................................................................................................................. Kr-19
슬롯 .................................................................................................................. Kr-20
LED 상태 표시기 .............................................................................................. Kr-21
BIOS 설정 ........................................................................................................ Kr-23
소프트웨어 정보 ............................................................................................... Kr-32
日本語 ........................................................................................................Jp-1
マザーボードの仕様 ........................................................................................... Jp-2
▍

Preface
MS-7640
Preface
x
Preface
MS-7640
Preface
クイックコンポーネントガイド ......................................................................... Jp-4
ねじ穴 ................................................................................................................ Jp-5
CPUに関する注意事項 ....................................................................................... Jp-6
メモリ ................................................................................................................ Jp-9
電源 .................................................................................................................. Jp-11
I/Oパネル .......................................................................................................... Jp-12
コネクター ....................................................................................................... Jp-14
ジャンパ ........................................................................................................... Jp-19
スロット ........................................................................................................... Jp-20
状態表示LED .................................................................................................... Jp-21
BIOSの設定 ...................................................................................................... Jp-23
ソフトウェアの情報 ......................................................................................... Jp-32
繁體中文 ....................................................................................................Tc-1
主機板規格 .........................................................................................................Tc-2
快速零組件指南 ..................................................................................................Tc-4
裝機孔 ................................................................................................................Tc-5
CPU (中央處理器) ..............................................................................................Tc-6
記憶體 ................................................................................................................Tc-9
電源供應器 .......................................................................................................Tc-11
背板 ..................................................................................................................Tc-12
接頭 ..................................................................................................................Tc-14
跳線 ..................................................................................................................Tc-19
插槽 ..................................................................................................................Tc-20
LED 燈號說明 ...................................................................................................Tc-21
BIOS 設定 ........................................................................................................Tc-23
軟體訊息 ...........................................................................................................Tc-32
简体中文 ....................................................................................................Sc-1
主板规格 .............................................................................................................Sc-2
组件快速指南 ......................................................................................................Sc-4
螺丝孔 ................................................................................................................Sc-5
CPU（中央处理器） ..........................................................................................Sc-6
内存 ....................................................................................................................Sc-9
电源适配器 .......................................................................................................Sc-11
后置面板 ...........................................................................................................Sc-12
接口 ..................................................................................................................Sc-14
跳线 ..................................................................................................................Sc-19
插槽 ..................................................................................................................Sc-20
LED 状态说明 ...................................................................................................Sc-21
BIOS 设置 ........................................................................................................Sc-23
软件信息 ...........................................................................................................Sc-32

Englsh
990XA-GD55
seres
Asa verson

En-2
MS-7640 Manboard
Manboard Spec󰘰catons
Processor Support
AMD® FX / PhenomTM II / AthlonTM II / SempronTM Processors wth AM3+ package.
(For the latest nformaton about CPU, please vst http://www.ms.com/servce/cpu-
support/)
HyperTransport
HyperTransport™ 3.0, supports up to 5.2 GT/s
Chpset
North Brdge: AMD® 990X chpset
South Brdge: AMD® SB950 chpset
Memory Support
DDR3 2133 *(OC)/ 1866/ 1600/ 1333/ 1066/ 800 SDRAM (total 32 GB Max)
4 DDR3 DIMMs, supports Dual-Channel mode
*(OC means OverClockng, for more nformaton on compatble components, please
vst http://www.ms.com/servce/test-report/)
LAN
Supports PCIe Gb LAN (10/100/1000) by Realtek® RTL8111E
Audo
HD audo codec ntegrated by Realtek® ALC892
Flexble 8-channel audo wth jack sensng
SATA
6 SATA 6Gb/s ports (SATA1~6) by AMD® SB950
Supports hot plug & asynchronous not󰘰caton
USB 3.0
2 USB 3.0 ports (back panel) by NEC D720200
RAID
SATA1~6 support RAID 0/ 1/ 5/ 10 mode by AMD® SB950
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En-3
Englsh
Connectors
Back panel
1 PS/2 keyboard/ mouse port
1 Clear CMOS button
1 Coaxal S/PDIF-Out port
1 Optcal S/PDIF-Out port
8 USB 2.0 ports
2 USB 3.0 ports
1 LAN port
6 󰘱exble audo ports
On-Board
2 USB 2.0 connectors
1 Seral port connector
1 Chasss Intruson connector
1 S/PDIF-Out connector
1 Front Panel Audo connector
1 TPM Module connector
Slots
2 PCIe x16 slots
If two graphcs cards are nstalled n both PCIe x16 slots, these two PCIe 2.0 x16
lanes wll auto arrange from x16/ x0 to x8/ x8
4 PCIe x1 slots
1 PCI slot, supports 3.3V/ 5V PCI bus Interface
Form Factor
ATX (24.4 cm X 30.5 cm)
Mountng
9 mountng holes
If you need to purchase accessores and request the part numbers, you could search
the product web page and 󰘰nd detals on our web address below
http://www.ms.com/ndex.php
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En-4
MS-7640 Manboard
JPWR2, En-11
Quck Components Gude
Back Panel,
En-12
CPU, En-6 CPUFAN1, En-15
DDR3, En-9
JPWR1, En-11
SYSFAN2,
En-15
SATA1~6,
En-14
SYSFAN4,
En-15
JBAT1, En-19
JFP1, JFP2, En-16
JTPM1, En-18
JUSB1, JUSB2,
En-17
JCOM1,
En-17
JSP1, En-16
JAUD1, En-15
PCI, En-20
PCIe, En-20
SYSFAN3,
En-15
JCI1, En-14
SYSFAN1,
En-15

En-5
Englsh
Screw Holes
When you nstall the manboard, you have to place the manboard nto the chasss n the
correct drecton. The locatons of screws holes on the manboard are shown as below.
Refer above pcture to nstall stando󰘯s n the approprate locatons on chasss and then
screw through the manboard screw holes nto the stando󰘯s.
Important
To prevent damage to the manboard, any contact between the manboard crcut and
chasss or unnecessary stando󰘯s mounted on the chasss s prohbted.
Please make sure there s no metal components placed on the manboard or wthn
the chasss that may cause short crcut of the manboard.
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Screw holes
The sde has to toward
the rear, the poston
for the I/O sheld of the
chasss.

En-6
MS-7640 Manboard
CPU (Central Processng Unt)
When you are nstallng the CPU, make sure to nstall the cooler to prevent overheatng.
If you do not have the CPU cooler, consult your dealer before turnng on the computer.
For the latest nformaton about CPU, please vst http://www.ms.com/servce/cpu-sup-
port/
Important
Overheatng
Overheatng wll serously damage the CPU and system. Always make sure the coolng
fan can work properly to protect the CPU from overheatng. Make sure that you apply
an even layer of thermal paste (or thermal tape) between the CPU and the heatsnk to
enhance heat dsspaton.
Replacng the CPU
Whle replacng the CPU, always turn o󰘯 the ATX power supply or unplug the power
supply’s power cord from the grounded outlet 󰘰rst to ensure the safety of CPU.
Overclockng
Ths manboard s desgned to support overclockng. However, please make sure your
components are able to tolerate such abnormal settng, whle dong overclockng. Any
attempt to operate beyond product spec󰘰catons s not recommended. We do not guar-
antee the damages or rsks caused by nadequate operaton or beyond product spec-
󰘰catons.
Gold arrow
Introducton to AM3+ CPU
The surface of CPU. Remember to apply some thermal paste on t for better heat
dsperson.

En-7
Englsh
CPU & Cooler Installaton
When you are nstallng the CPU, make sure the CPU has a cooler attached on the top
to prevent overheatng. Meanwhle, do not forget to apply some thermal paste on CPU
before nstallng the heat snk/cooler fan for better heat dsperson.
Follow the steps below to nstall the CPU & cooler correctly. Wrong nstallaton wll
cause the damage of your CPU & manboard
If the CPU s correctly nstalled, the
pns should be completely embedded
nto the socket and can not be seen.
Please note that any volaton of the
correct nstallaton procedures may
cause permanent damages to your
manboard.
3. Press the CPU down 󰘰rmly nto the
socket and close the lever. As the
CPU s lkely to move whle the lever
s beng closed, always close the
lever wth your 󰘰ngers pressng tghtly
on top of the CPU to make sure the
CPU s properly and completely
embedded nto the socket.
4.
Pull the lever sdeways away from
the socket. Make sure to rase the
lever up to a 90-degree angle.
1. Look for the gold arrow of the CPU.
The gold arrow should pont as shown
n the pcture. The CPU can only 󰘰t n
the correct orentaton.
2.

En-8
MS-7640 Manboard
Important
Whle dsconnectng the Safety Hook from the 󰘰xed bolt, t s necessary to keep an eye
on your 󰘰ngers, because once the Safety Hook s dsconnected from the 󰘰xed bolt, the
󰘰xed lever wll sprng back nstantly.
Poston the coolng set onto the
retenton mechansm.
Hook one end of the clp to hook
󰘰rst.
5. Then press down the other end of the
clp to fasten the coolng set on the
top of the retenton mechansm.
Locate the Fx Lever and lft up t.
6.
Fasten down the lever.7. Attach the CPU Fan cable to the CPU
fan connector on the manboard.
8.

En-9
Englsh
Memory
These DIMM slots are used for nstallng memory modules. For more nformaton on
compatble components, please vst http://www.ms.com/servce/test-report/
DDR3
240-pn, 1.5V
48x2=96 pn 72x2=144 pn
Dual-Channel mode Populaton Rule
In Dual-Channel mode, the memory modules can transmt and receve data wth two
data bus lnes smultaneously. Enablng Dual-Channel mode can enhance the system
performance. The followng llustratons explan the populaton rules for Dual-Channel
mode.
1 DIMM1
DIMM3
DIMM2
DIMM4
2 DIMM1
DIMM3
DIMM2
DIMM4
Installed
Empty
Important
DDR3 memory modules are not nterchangeable wth DDR2 and the DDR3 standard
s not backwards compatble. You should always nstall DDR3 memory modules n
the DDR3 DIMM slots.
In Dual-Channel mode, make sure that you nstall memory modules of the same type
and densty n d󰘯erent channel DIMM slots.
To enable successful system boot-up, always nsert the memory modules nto the
DIMM1 󰘰rst.
Due to the chpset resource deployment, the system densty wll only be detected up
to 31+GB (not full 32GB) when each DIMM s nstalled wth a 8GB memory module.
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En-10
MS-7640 Manboard
Installng Memory Modules
The memory module has only one notch on the center and wll only 󰘰t n the rght
orentaton.
Insert the memory module vertcally nto the DIMM slot. Then push t n untl the
golden 󰘰nger on the memory module s deeply nserted n the DIMM slot. The plastc
clp at each sde of the DIMM slot wll automatcally close when the memory module
s properly seated.
Manually check f the memory module has been locked n place by the DIMM slot
clps at the sdes.
Notch
Volt
Important
You can barely see the golden 󰘰nger f the memory module s properly nserted n the
DIMM slot.
1.
2.
3.