Specifications

Yourcomputerhas16slotsforinstallingorreplacingDDR3ECCUDIMMsorDDR3ECCRDIMMs.When

installingorreplacingamemorymodule,usethefollowingguidelines:

•UseeitherDDR3ECCUDIMMsorDDR3ECCRDIMMsforyourcomputer.Donotinstallboththe

UDIMMsandRDIMMsintothesamecomputer.

•Use2GB,4GB,or8GBUDIMMsinanycombinationuptoamaximumof128GB.

•Use2GB,4GB,8GB,16GB,or32GBDDR3RDIMMsinanycombinationuptoamaximumof512GB.

•AlwaysinstallDIMMsinthenumericalorderprintedonthesystemboard(DIMM1,DIMM2,DIMM3,

andsoon).Installmemorymodulesintothebluecolormemoryslotsﬁrst.See“Locatingpartsonthe

systemboard”onpage76

•Ifyourcomputerhasonlyonemicroprocessorinstalled,besuretoinstallmemorymodulesonlyinthe

memoryslotsadjacenttothatmicroprocessor.

•Ifyourcomputerhastwomicroprocessorsinstalled,installequalnumbersofmemorymodulesinboth

setsofmicroprocessorDIMMslotsformaximumperformance.

Toinstallorreplaceamemorymodule,dothefollowing:

1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage82.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Locatethememoryslots.See“Locatingpartsonthesystemboard”onpage76.

5.Removeanypartsthatmightpreventyouraccesstothememoryslots.Dependingonyourcomputer

model,youmightneedtoremovethePCIExpressx16graphicscardforeasieraccesstothememory

slots.See“InstallingorreplacingaPCIcard”onpage84

6.Forsomecomputermodels,youmightneedtoremovethememoryfanducttogetaccesstothe

memoryslots.Toremovethememoryfanduct,disconnectthememoryfancablefromthesystem

board.See“Locatingpartsonthesystemboard”onpage76.

7.Pullthefanducttaboutwardandpivotthefanduct,andthendisengagetherearofthefanduct.

Note:Notallcomputermodelshavethememoryfanduct.

Figure12.Removingthememoryfanduct

8.Dependingonwhetheryouareinstallingorreplacingamemorymodule,dooneofthefollowing:

90ThinkStationD30HardwareMaintenanceManual