Dell 6400 Owner's Manual page 122

Release the Mini-Card by pushing the metal securing tabs toward the back of the computer until
b
the card pops up slightly.
Lift the Mini-Card out of its system board connector.
c
1 system board connector
NOTICE:
The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors on
the card and on the system board, and realign the card.
5 Install the replacement Mini-Card:
Insert the Mini-Card connector into the system board connector at a 45-degree angle, and then
a
press the other end of the Mini-Card down into the securing tabs until the card clicks into place.
122
Adding and Replacing Parts
1
3
2 Mini-Card
2
3 metal securing tabs (2)