Dell Precision T7400 (Late 2007) - Manual (Page 234)

234 Adding and Replacing Parts
8 Ensure that all connectors are properly cabled and firmly seated.
9 Replace the computer cover (see "Replacing the Computer Cover" on
page 145).
NOTICE: To connect a network cable, first plug the cable into the network port or
device and then plug it into the computer.
10 Connect the computer and devices to electrical outlets, and turn them on.
1 blue tabs (2) 2 hard drive
3 hard-drive bay
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