IBM ThinkPad T43 Hardware Maintenance Manual page 85

Removing and replacing a FRU
3
4
3
When installing: Insert the notched end of the DIMM into
the socket. Press the DIMM firmly, and
pivot it until it snaps into the place.
Make sure that it is firmly fixed in the
slot and does not move easily.
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ThinkPad T43/T43p Series