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 After working inside your computer.
Power supply unit
Removing power supply unit — PSU
1 Follow the procedure in Before working inside your computer.
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].
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Removing and installing components