Apple PC Compatibility Card 12-inch card - Manual (Page 151)

3 Pull the DIMM to remove it.
If the DIMM sticks, pull gently, but don’t force it.
Be careful not to touch the connectors.
Set the DIMM aside. (If you wish, you may be able to install it in your
computer later. It’s compatible with most Macintosh models.)
Installing the new DIMM
1 Remove the DIMM from its static-proof bag.
Handle the DIMM by its edges. Avoid touching the connectors.
Pull the DIMM straight out of the socket. Handle the DIMM
by its edges only, and avoid touching the connectors.
Connectors
137 Adding Memory to a PC Compatibility Card