Lenovo x3550 M5 - Memory Module Installation

Step4.Removetheairbaffle(see“Removingtheairbaffle”onpage122).
Step5.CarefullyopentheretainingclipsoneachendoftheDIMMconnectorandremovetheDIMM.
Attention:ToavoidbreakingtheretainingclipsordamagingtheDIMMconnectors,openand
closetheclipsgently.
Alignment
slot
DIMM
Alignment tab
Retaining
clip
Figure82.DIMMremoval
IfyouareinstructedtoreturntheDIMM,followallpackaginginstructions,anduseanypackagingmaterials
forshippingthataresuppliedtoyou.
Memorymoduleinstallation
ThefollowingnotesdescribethetypesofDIMMsthattheserversupportsandotherinformationthatyou
mustconsiderwhenyouinstallDIMMs.
•WhenyouinstallorremoveDIMMs,theserverconfigurationinformationchanges.Whenyourestartthe
server,thesystemdisplaysamessagethatindicatesthatthememoryconfigurationhaschanged.
•Theserversupportsonlyindustry-standarddouble-data-rate4(DDR4),1600,1866,or2133
MHz,PC4-12800,PC4-14900,orPC4-17000registeredorloaddeduction,synchronousdynamic
random-accessmemory(SDRAM)dualinlinememorymodules(DIMMs)witherrorcorrectingcode(ECC).
Seehttp://www.lenovo.com/serverproven/foralistofsupportedmemorymodulesfortheserver.
–ThespecificationsofaDDR4DIMMareonalabelontheDIMM,inthefollowingformat.gggggeRxff
PC3v-wwwwwm-aa-bb-ccd
where:
–gggggisthetotalcapacityoftheDIMM(forexample,1GB,2GB,or4GB)
–eRisthenumberofranks
1R=single-rank
2R=dual-rank
4R=quad-rank
–xffisthedeviceorganization(bitwidth)
160LenovoSystemx3550M5InstallationandServiceGuide