Lenovo System x3550 M5 - Memory Module Installation

Step4.Removetheairbaffle(see“Removingtheairbaffle”onpage122).
Step5.CarefullyopentheretainingclipsoneachendoftheDIMMconnectorandremovetheDIMM.
Attention:ToavoidbreakingtheretainingclipsordamagingtheDIMMconnectors,openand
closetheclipsgently.
Alignment
slot
DIMM
Alignment tab
Retaining
clip
Figure85.DIMMremoval
IfyouareinstructedtoreturntheDIMM,followallpackaginginstructions,anduseanypackagingmaterials
forshippingthataresuppliedtoyou.
Memorymoduleinstallation
ThefollowingnotesdescribethetypesofDIMMsthattheserversupportsandotherinformationthatyou
mustconsiderwhenyouinstallDIMMs.
•WhenyouinstallorremoveDIMMs,theserverconfigurationinformationchanges.Whenyourestartthe
server,thesystemdisplaysamessagethatindicatesthatthememoryconfigurationhaschanged.
•Theserversupportsonlyindustry-standarddouble-data-rate4(DDR4)2400MHzPC4-19200registered
orloadreduction,synchronousdynamicrandom-accessmemory(SDRAM)dualinlinememorymodules
(DIMMs)witherrorcorrectingcode(ECC).Seehttp://www.lenovo.com/serverproven/foralistof
supportedmemorymodulesfortheserver.
–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