Power Supply Unit; Removing Power Supply Unit - Psu - Dell OptiPlex 5055 Owner's Manual

3 Install the:
a M.2 PCIe SSD
b optical drive
c cooling shroud
d 2.5 inch hard drive assembly
e front bezel
f cover
4 Follow the procedure in

Power supply unit

Removing power supply unit — PSU
1 Follow the procedure in
2 Remove the:
a cover
b front bezel
c 2.5 inch hard drive assembly
d cooling shroud
e optical drive
3 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].
32 Removing and installing components
After working inside your computer.
Before working inside your computer.