I know that the Cube has an external power supply. (http://www.gibbspool.com/ebay/AppleG4CubePowerSupply.JPG for a picture I found of it.) But is there anything internal to get the power to work on a Cube? If I were to acquire a Cube motherboard with a CPU on it, and use my own casing, what do I need to get everything to power up? What do I plug the HD/DVD power cables to internally? Where does that external power supply plug into on the Cube motherboard? Thanks a lot for any help.