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How to Remove a Computer/PC Power Supply Unit

How to Remove a Computer/PC Power Supply Unit

Power Supply Unit Are :
1. from Power Unit To Motherboard

2. Feeding Mass Storage Unit

Removing a Power Supply 
 1. Remove the two power connectors (P8 and P9) from the
board, using the plastic connector, not the wires. 
2. Remove the power connectors from all other components,
including the hard, floppy, and CD-ROM drives. 
 3. Remove the screws that hold the power supply to the
chassis. Do not remove the screws from the power supply
case itself!
 4. Slide the power supply away from the computer.
Reverse this procedure to install a power supply. It is important
to note that the P8 and P9 connectors look almost identical.
Although each will attach to the system board only one way, it is
possible to place them beside each other the wrong way. When
attaching them to the system board, make sure the black wires of the
connectors are together.

The P8 and P9 connectors are attached to the system board
with the black wires together.