Sony PCV-RX640 - Manual (Page 41)

Removing, Installing, and Replacing Components 29
5 Replace the screw that secures the card.
6 Attach any necessary cables to the card (see the instructions that came
with the add-in card).
7
Replace the side cover (see “Replacing the Side Cover” on page 25).
8
Turn on the computer and follow any instructions that came with the
add-in card.