Lenovo System x3550 M4 - Page 228

Step3.Removethecover(see“Removingthecover”onpage189).
Step4.Removetheairbaffle(see“Removingtheairbaffle”onpage191).
Step5.CarefullyopentheretainingclipsoneachendoftheDIMMconnectorandremovetheDIMM.
Attention:ToavoidbreakingtheretainingclipsordamagingtheDIMMconnectors,openand
closetheclipsgently.
Figure136.DIMMremoval
IfyouareinstructedtoreturntheDIMM,followallpackaginginstructions,anduseanypackagingmaterials
forshippingthataresuppliedtoyou.
Installingamemorymodule
ThefollowingnotesdescribethetypesofDIMMsthattheserversupportsandotherinformationthatyou
mustconsiderwhenyouinstallDIMMs.
•WhenyouinstallorremoveDIMMs,theserverconfigurationinformationchanges.Whenyourestartthe
server,thesystemdisplaysamessagethatindicatesthatthememoryconfigurationhaschanged.
•Theserversupportsonlyindustry-standarddouble-data-rate3(DDR3),1066,1333,1600,or1866MHz,
PC3-8500,PC3-10600,PC3-12800,orPC3-14900registeredorunbuffered,synchronousdynamic
random-accessmemory(SDRAM)dualinlinememorymodules(DIMMs)witherrorcorrectingcode(ECC).
Seehttp://www.lenovo.com/us/en/serverproven/foralistofsupportedmemorymodulesfortheserver.
–ThespecificationsofaDDR3DIMMareonalabelontheDIMM,inthefollowingformat.
gggggeRxffPC3v-wwwwwm-aa-bb-ccd
where:
–gggggisthetotalcapacityoftheDIMM(forexample,1GB,2GB,or4GB)
–eRisthenumberofranks
1R=single-rank
2R=dual-rank
4R=quad-rank
–xffisthedeviceorganization(bitwidth)
214Systemx3550M4InstallationandServiceGuide