Dell XPS 730 (Late 2008) - Manual (Page 80)

78 Replacing Fans
7 To install the card slot fan assembly, connect the fan cable to the
FAN_CAGE connector on the system board (see "Master Control Board"
on page 12).
8 Align the fan cage tabs with the slots in the chassis. Insert the tabs and
push the cage towards the front of the chassis.
9 Screw in the fan retention screws on the front and back of the fan cage.
10 Replace any expansion cards that you removed (see "Replacing a PCI/PCI
Express Card" on page 27).
11 Replace the PCI card fan shroud and captive screws on top of it.
1 cage housing 2 fan cage
3 screws (2)
1
2
3