DFI SB331-IPM User Manual page 19

6. Grasping the module by its edges, position the module above the socket with
the "notch" in the module aligned with the "key" on the socket. The keying
mechanism ensures the module can be plugged into the socket in only one
way.
7. Seat the module vertically, pressing it down firmly until it is completely seat-
ed in the socket.
8. The ejector tabs at the ends of the socket will automatically snap into the
locked position to hold the module in place.
Hardware Installation
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