Heehee, well, it's a key lock...to power up something. (I actually don't have anything planned for the system power switch yet...I should probably start thinking of something for that..)
Also, pics of primed metals (I'm gonna be doing another coat of primer tomorrow, plus a coat of matte black, and then a final coat of this nice textured black stuff I found; feels a little like a poor-man's powder coat):
Yes, I know that one panel looks pretty horrid; I ran out of paint.