Lexmark C522 - Manual (Page 125)

Installing an optional memory card
125
Installing and removing options
3 Unpack the memory card. Save the packaging materials.
Avoid touching the connection points along the edge of the card.
4 Align the notches on the memory card with the ridges on the connector.
5 Push the memory card straight into the connector until it snaps into place. Make sure each latch fits over the notch
located on either side of the memory card.
6 Replace the metal plate (see Replacing the system board metal plate).
Ridge
Notch
Latch
Notch