Dell Inspiron One 2330 Owner's Manual page 26

Procedure
1 Disconnect the B-CAS card cable from the connector on the B-CAS card.
2 Remove the screw that secures the BCAS-card to the I/O cover.
3 Lift the B-CAS card off the I/O cover.
1 I/O cover
3 screw
26
B-CAS Card
2 B-CAS card
4 B-CAS card cable
4
3
2
1