Dell XPS 8930 Service Manual page 59

10 Lift the power-supply bracket off the chassis.
11 Lift the power-supply unit off the chassis.
Figure 19. Removing the power supply unit
1 #6-32x1/4'' screws (4)
3 power-supply bracket
5 hard-drive cable
2 power-supply unit
4 #6-32x1/4'' screws (2)
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