HP Pro 4300 Maintenance And Service Manual page 65

10. Remove the three black Torx screws that secure the fan to the computer, and then disconnect
the fan cable from the system board connector labeled CHASSIS_FAN1.
Figure 6-44 Fan screws
11. Slide the fan toward the right to remove it from underneath the metal bracket, and then lift the
fan from the computer.
Figure 6-45 Removing the fan
To install the fan assembly, reverse the removal procedures.
Fan 57