Dell OptiPlex GX745 User'smanual page 32

b. Gently pull on the handle and lift the riser-card cage up and away from the computer.
1 riser-card cage
2 handle
4. If you are installing a new card, remove the filler bracket to create an empty card-slot opening.
If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the card. Grasp
the card by its corners, and ease it out of its connector.
NOTE: See the documentation that came with the card for information on configuring the card, making internal connections, or customizing it for your
computer.
5. Prepare the new card for installation.
CAUTION: Some network adapters automatically start the computer when they are connected to a network. To guard against electrical shock, be
sure to unplug your computer from its electrical outlet before installing any cards.
6. Press the release tab to raise the card-retention latch.
1 release tab
2 card-retention latch
3 card
7. Insert the card firmly into the card connector on the riser-card cage.
8. Lower the card-retention latch and press it into place, securing the card(s) in the computer.
9. Replace the riser-card cage:
4 card-edge connector
5 card connector