Dell Dimension XPS 50 Reference Manual page 30

2-4 Dell Dimension XPS Txxx and Txxxr Systems Reference and Troubleshooting Guide
hinged tabs (2)
slots (2)
support beam
Replace the computer cover and support beam on a desktop or mini tower chassis as
follows:
1. Check all cable connections, especially those that might have come loose during
your work. Fold cables and unused connectors out of the way so that they do not
catch on the computer cover or interfere with airflow inside the computer.
2. Check to see that no tools or extra parts (including screws) are left inside the
computer.
3. Slip the support beam's hinged tabs into their slots (see Figure 2-2) and lower the
beam. Then place the lock tab into its fastener, and press down on the front end
of the beam until it snaps into position.
4. Position the cover on the chassis approximately 1 inch back. Slide the cover for-
ward until it locks into place.
5. Tighten the cover-mounting thumbscrew on the back of the chassis.
lock tab
fastener
front of computer