Dell Dimension XPS 50 Reference Manual page 40

6.
2-14 Dell Dimension XPS Txxx and Txxxr Systems Reference and Troubleshooting Guide
card-edge
connector
expansion-card connector
When the card is firmly seated in the connector, secure the card-mounting
bracket with the screw you removed in step 4.
Make sure the front of the card-edge connector is completely seated in the
expansion-card connector. The bottom of the card-mounting bracket must be
inside the card-slot opening, and the top of the bracket must be flush against
the chassis with the notch aligned with the screw hole in the chassis (see
Figure 2-9). "Expansion Cards" in Chapter 6 provides more information on cor-
rectly seating an expansion card.
expansion card
card guide