Installingorreplacingamemorymodule
Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheThinkStationSafetyandWarrantyGuidethatcamewithyourcomputer.Toobtainacopyofthe
ThinkStationSafetyandWarrantyGuide,goto:
http://support.lenovo.com
CAUTION:
Thememorymodulesmightbeveryhot.Turnoffthecomputerandwaitthreetoveminutestolet
thecomputercoolbeforeremovingthecomputercover.
Yourcomputerhas12slotsforinstallingorreplacingDDR3ECCUDIMMs(doubledatarate3errorcorrection
codeunbuffereddualin-linememorymodules)orDDR3ECCRDIMMs(doubledatarate3errorcorrection
coderegistereddualin-linememorymodules).
Wheninstallingorreplacingmemorymodules,usethefollowingguidelines:
•UseeitherDDR3ECCUDIMMsorDDR3ECCRDIMMsforyourcomputer.Donotinstallboththe
UDIMMsandRDIMMsintothesamecomputer.
•Use1GB,2GB,or4GBUDIMMsinanycombinationuptoamaximumof48GB.
•Use1GB,2GB,4GB,or8GBRDIMMsinanycombinationuptoamaximumof96GB.
•AlwaysinstallDIMMsinthenumericalorderprintedonthesystemboard(DIMM1,DIMM2,DIMM3,and
soon).Installmemorymodulesintothebluecolormemoryslotsrst.
•IfyourcomputerhasonlyoneCPUinstalled,besuretoinstallmemorymodulesonlyinthememory
slotsadjacenttothatCPU.
•IfyourcomputerhastwoCPUsinstalled,installequalnumbersofmemorymodulesinbothsetsofCPU
DIMMslotsformaximumperformance.
Toinstallorreplaceamemorymodule:
1.Removethecomputercover.See“Removingthecomputercover”onpage11.
2.Laythecomputeronitsside.
3.Locatethememoryslots.See“Identifyingpartsonthesystemboard”onpage8.
4.Forsomecomputermodels,youmightneedtoremovethememoryfanducttoaccessthememory
slots.Toremovethememoryfanduct,disconnectthememoryfancablefromthesystemboard,
removetheblueshippingclip,pressinwardonthetwotabs,pivotthefanduct,andthendisengagethe
otherendoftheduct.
Note:Notallcomputermodelshavethememoryfanductandblueshippingclip.
Figure24.Removingthememoryfanduct
Chapter3.Installingoptionsandreplacinghardware25
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