Chassis Id Switch; Dimm Slots - HP PROLIANT DL380 User Manual

Systems running Microsoft Windows operating systems experience a blue screen
trap when the operating system crashes. When this happens, Microsoft
recommends that system administrators perform an NMI event by pressing a
dump switch. The NMI event enables a hung system to become responsive again.

Chassis ID Switch

The chassis ID switch on the system board is reserved for use by authorized
technicians only. Do not modify the switch setting.

DIMM Slots

DIMM slots are numbered sequentially (1 through 6) and the paired banks are
identified by the letters A, B, and C.
Server Component Identification 19