Lenovo ThinkCentre Edge 91 - Installing or Replacing a Memory Module

Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage57.
Installingorreplacingamemorymodule
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoinstallorreplaceamemorymodule.
YourcomputerhasfourslotsforinstallingorreplacingDDR3UDIMMsthatprovideuptoamaximumof16
GBsystemmemory.Wheninstallingorreplacingamemorymodule,usethefollowingguidelines:
•Use1GB,2GB,or4GBDDR3UDIMMsinanycombinationuptoamaximumof16GB.
•Thefollowingtableprovidesinformationaboutthememorymoduleinstallationrulesthatyoushould
considerwheninstallingorremovingamemorymodule.The“X”markindicatesthememoryslot(s)
intowhichthememorymodule(s)shouldbeinstalledindifferentsituations.Thenumbers1,2,3,and
4indicatetheinstallationsequence..
UDIMMDIMM1DIMM2DIMM3DIMM4
OneUDIMM
X
TwoUDIMMsX,1X,2
ThreeUDIMMsX,1X,2X,3
FourUDIMMsX,1X,2X,3X,4
Toinstallorreplaceamemorymodule,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Removethecomputercover.See“Removingthecomputercover”onpage30.
3.Laythecomputeronitssideforeasieraccesstothesystemboard.
4.Locatethememoryslots.See“Locatingpartsonthesystemboard”onpage12.
5.Removeanypartsthatmightpreventyouraccesstothememoryslots.Dependingonyourcomputer
model,youmightneedtoremovethePCIExpressx16graphicscardforeasieraccesstothememory
slots.See“InstallingorreplacingaPCIcard”onpage33
.
6.Dependingonwhetheryouareinstallingorreplacingamemorymodule,dooneofthefollowing:
Chapter5.Installingorreplacinghardware35