Removing the power supply

Removing the power supply is quite easy.  First, be sure the unit is unplugged.  Both the motherboard and the power supply have about four screws holding them to the plastic chassis.  Once these screws are removed, the boards can be lifted and separated from each other. 

The power cord going to the power supply can be removed by squeezing the white tab the locks the connector in place.  Here's what it looks like when you're done taking it apart.  

Now we're ready to remove the power cord.  While there may be a more elegant way of doing this, I chose to take a more brute force approach.  I simply took a pair of wire cutters and cut a notch in the plastic chassis to remove the power cord without destroying the cord.  The image below shows the notch having been cut out.

With the notch in place simply slide out the power cord and keep it in case you want to undo the modifications.