Dell OptiPlex GX280 - Manual (Page 268)

If you are replacing either type of PCI Express card, remove the current driver for the card from the operating system.
Installing a PCI Express x16 Card
1. Follow the procedures in " Before You Begin ."
2. If you are replacing a PCI Express x16 card, remove the installed card:
a. Press the lever with your thumb until you release the securing tab.
b. While pressing the lever, pull the card up and out of the card connector..
1 PCI Express x16 card
2 lever
3 securing slot (not all cards)
4 securing tab
5 PCI Express x16 card 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.
3. Prepare the 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.
4. Press the card lever away from the card connector and insert the new card.
5. Press down firmly. Ensure that the card is fully seated in the slot.