System Board; Removing The System Board - Dell OptiPlex 5055 Tower Owner's Manual

System board

Removing the system board

1 Follow the procedure in
2 Remove the:
a Back cover
b Front bezel
3 Open the front panel door.
4 Remove the:
a Heat sink assembly
b Processor
c Expansion card
d Optional M.2 PCIe SSD card
e SD card reader
f Memory module
5 Disconnect the optical drive and hard drive cables [1,2] from the connectors on the system board.
6 Disconnect the following cables from the system board:
a PSU [1]
42 Disassembly and reassembly
Before working inside your computer.