Dell Precision T7400 (Late 2007) - Manual (Page 223)

Adding and Replacing Parts 223
NOTICE: To connect a network cable, first plug the cable into the network port or
device and then plug the cable into the computer.
16 Replace the computer cover (see "Replacing the Computer Cover" on
page 145), reconnect the computer and devices to electrical outlets, and
then turn them on.
Removing the Optional Graphics Riser Card
NOTE: To upgrade to or downgrade from a dual-graphics configuration (with the
graphics riser card), you will need additional parts that can be ordered from Dell.
See "Contacting Dell" on page 287.
1 Follow the procedures in "Before You Begin" on page 139.
1 graphics card bridge (not present
on some dual-graphics
configurations)
2 power connectors (2)
3 dual-PCI Express graphics cards
1
3
2