Dell Precision T7400 (Late 2007) - Manual (Page 198)

198 Adding and Replacing Parts
See the documentation that came with the card for information on
configuring the card, making internal connections, or otherwise
customizing it for your computer.
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.
8 If the card is full-length, align it between the plastic card guides on the
card fan.
9 Position the card so that it is aligned with the slot and the securing tab (if
present) is aligned with the securing slot.
10 Place the card in the connector and press down firmly. Ensure that the card
is fully seated in the slot
If there is a release tab on the card slot, pull the release tab.
1 bracket within slot 2 bracket caught outside of slot
3 card fully seated 4 card not fully seated
3
4
2
1