Sony VGC-RM1 - Manual (Page 102)

102 n N
Upgrading Your VAIO Computer
4 Insert the add-on card into the expansion slot and secure it with the screw from the expansion slot cover.
!
Be careful not to touch other internal components when inserting the card as it may cause a failure.
5 Replace the top panel.
See Removing and Replacing the Main Unit Top Panel
(page 87) for the detailed instructions.