As people say, snapping the USB board in is trivial. Watch out to unscrew the right screws opening up the case (i.e. don't detach any boards). Getting the LEDs lined up was easy for me working alone, but you it did seem like it could get messed up if you bent them out of alignment somehow. Lots of space and good big screws, so much easier than most electronics tinkering.
Edited by StefanJK - 5/18/15 at 5:22am