3. Install the system fan .
4. Close the front panel door.
5. Install the:
a. Front bezel
b. Side cover
6. Follow the procedure in After working inside your computer.
Power supply unit
Removing power supply unit or PSU
1. Follow the procedure in Before working inside your computer.
2. Remove the:
a. Side cover
b. Front bezel
3. Open the front panel door.
4. To release the PSU:
a. Disconnect the PSU cables from the connectors on the system board [1].
b. Unroute the PSU cables from the retention clips [2, 3, 4, 5].
c. Disconnect the PSU cables from the connectors on the system board [6].
Removing and installing components
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