Dell Optiplex 5070 Small Form Factor - Power Supply Unit (PSU) Removal and Installation

4. Install the:
a) Heatsink assembly
b) Hard drive and optical drive module
c) HDD assembly
d) Front bezel
e) Side cover
5. 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
c) HDD assembly
d) Hard drive and optical drive module
e) Heatsink assembly
3. To release the PSU:
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Removing and installing components