I want it all built in. I do not like to have things hanging off the side as im carrying my printer. My first Sells Mendel had external box for electronics and heated bed controller. For my new Prusa i2 Mendel, i wanted to have all components integrated to the frame. So here is my attempt at making a Power and USB mount. Take a look at the pictures! :)

As an added bonus, i inserted a Relay to turn the power supply on or off using the GCode command M80 or M81.

There are added holes for Zip Ties. These help strain relief for the cables and simplify mounting to the Mendel frame.

USB 'extender':
http://amzn.com/B0039UT7GQ

AC Power Jack Mount:
http://amzn.com/B0008IW78W

Notes! http://flic.kr/p/dtdHdq