Xerox Phaser 3300 Servce Manual page 232

Service Parts Disassembly
8-80
4. Release the left and right latches securing the Memory Card and remove
the Memory Card.
5. When installing the Memory card, line up the notches in the card with the
keys in the socket, plug the card into the socket, and close the left and
right latches on the sides.
Latch
Memory DIMM
s3300mfp-191
s3300mfp-192
s3300mfp-193
Phaser 3300MFP Service Manual