HP Xw9300 - Workstation - 1 GB RAM Technical Reference Manual page 104

To replace the front fan:
1. Attach the fan to the fan housing as shown in the previous illustration.
2. Lower the fan holder
on the side of the fan faces the rear of the chassis.
3. Plug the header
104 Removal and Replacement Procedures
1 into the chassis and snap it into place. Be sure that the airflow direction arrow
2 into the red connector on the system board.