Personal Computer User Manual
Turnoffthecomputerandwaitthreetoveminutestoletthecomputercoolbeforeinstallingor
replacingamemorymodule.
Yourcomputerhas16slotsforinstallingorreplacingDDR3ECCUDIMMsorDDR3ECCRDIMMs.When
installingorreplacingamemorymodule,usethefollowingguidelines:
•UseeitherDDR3ECCUDIMMsorDDR3ECCRDIMMsforyourcomputer.Donotinstallboththe
UDIMMsandRDIMMsintothesamecomputer.
•Use2GB,4GB,or8GBUDIMMsinanycombinationuptoamaximumof128GB.
•Use2GB,4GB,8GB,16GB,or32GBDDR3RDIMMsinanycombinationuptoamaximumof512GB.
•AlwaysinstallDIMMsinthenumericalorderprintedonthesystemboard(DIMM1,DIMM2,DIMM3,
andsoon).Installmemorymodulesintothebluecolormemoryslotsrst.See“Locatingpartsonthe
systemboard”onpage10.
•Ifyourcomputerhasonlyonemicroprocessorinstalled,besuretoinstallmemorymodulesonlyinthe
memoryslotsadjacenttothatmicroprocessor.
•Ifyourcomputerhastwomicroprocessorsinstalled,installequalnumbersofmemorymodulesinboth
setsofmicroprocessorDIMMslotsformaximumperformance.
Toinstallorreplaceamemorymodule,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Removethecomputercover.See“Removingthecomputercover”onpage30.
3.Laythecomputeronitssideforeasieraccesstothesystemboard.
4.Locatethememoryslots.See“Locatingpartsonthesystemboard”onpage10.
5.Removeanypartsthatmightpreventyouraccesstothememoryslots.Dependingonyourcomputer
model,youmightneedtoremovethePCIExpressx16graphicscardforeasieraccesstothememory
slots.See“InstallingorreplacingaPCIcard”onpage32
.
6.Forsomecomputermodels,youmightneedtoremovethememoryfanducttogetaccesstothe
memoryslots.Toremovethememoryfanduct,disconnectthememoryfancablefromthesystem
board.See“Locatingpartsonthesystemboard”onpage10.
7.Pullthefanducttaboutwardandpivotthefanduct,andthendisengagetherearofthefanduct.
Note:Notallcomputermodelshavethememoryfanduct.
Figure14.Removingthememoryfanduct
8.Dependingonwhetheryouareinstallingorreplacingamemorymodule,dooneofthefollowing:
Chapter5.Installingorreplacinghardware35