Lexmark C720 User Reference Manual page 281

2
Push the latches at each end of the connector away from the card as shown.
The memory card moves out of the connector as the latches open.
3
Gently pull the card out of the connector.
4
Place the card into the original packaging.
If you do not have the original packaging, wrap the card in paper and store it in a box.
5
Close both latches.
6
Repeat steps 1 through 5 to remove additional memory cards.
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