Dell XPS 625 (Early 2009) - Manual (Page 23)

7. Set the card fan aside in a secure location.
8. To replace the card fan, orient the card fan power cable downward. Align the rubber grommets in the fan with the openings in each corner of the card
fan cage, then pull the grommets through until they snap into place.
9. Insert the four tabs along the bottom of the card fan cage into the corresponding slots on the chassis, then slide the card fan cage forward until it
snaps into place.
1 card fan 2 rubber grommets (4)
3 card fan cage 4 card fan power cable
CAUTION: Ensure that the fan power cable is correctly routed through the opening in the lower-right corner of the fan cage.
NOTE: Airflow direction and orientation are shown on the side of the fan.
1 card fan 2 rubber grommets (4)
3 card fan cage 4 card-fan orientation direction arrow
5 air-flow direction arrow 6 card fan power cable