Mode-specific guidelines...........................................................................................................................................83
Removing a memory module.................................................................................................................................... 84
Installing a memory module...................................................................................................................................... 85
NVDIMM-N battery.........................................................................................................................................................86
Removing the NVDIMM-N battery......................................................................................................................... 86
Installing the NVDIMM-N battery............................................................................................................................ 87
Processors and heat sinks.............................................................................................................................................. 88
Expansion bus specifications....................................................................................................................................94
IDSDM/vFlash card (optional)........................................................................................................................................111
Removing the micro SD card....................................................................................................................................111
Installing the micro SD card..................................................................................................................................... 112
Network daughter card.................................................................................................................................................. 114
Hard drives....................................................................................................................................................................... 119
Removing a hard drive blank....................................................................................................................................119
Installing a hard drive blank..................................................................................................................................... 120
Removing a hard drive.............................................................................................................................................. 121
Installing a hard drive................................................................................................................................................122
Hard drive backplane......................................................................................................................................................124
Cable routing.............................................................................................................................................................130
Hard drive cage (rear)....................................................................................................................................................134
Dell EMC PowerEdge R640 Installation and Service Manual
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Contents