I just didn't see the thumb screws at the front, they were hiding behind the PSU cable
*honest*
edit:
BIOS update done.
HDD moved up to 5.25" bay.
Ubuntu install underway
Waiting on the RAM and GFX...
I'm really impressed with how quiet it is. I think it'll easily sit in the living room and not be a noise distraction
Guess that means I need to start saving for a Bedroom TV now, no point in having my Revo sitting idle