Gateway 7210 System Manual page 71

Expansion card
retention clip
8
Once the card is securely placed, slide the card guide release tab down
again (for full-length expansion cards) and press the expansion card
retention clip through the back panel until it clicks into place to secure
the card.
9
Connect any cables to the card (see card documentation for proper cable
orientation).
10
Close the case. (See "Closing the case" on page 27.)
11
Reconnect the peripherals and the power cord, then turn on the system.
You may need to reconfigure the server after installing some expansion cards.
You may also need to install software that came with the card. Check the card
documentation for additional information.
64
Replacing and Adding Internal Devices
Card guide
release tab