Its not ATX or BTX aka 6 or 7 slot board so I'm not sure why you would ask that. Its Micro ATX  4 Slots   9.6  x  9.6 Pin outs are not documented or published for any board for the Audio ,Front panel ,power button etc. Rear Panel is part of the case for the 3640 its not removable. Power button is not 2 wires front panel audio and USB is a board not a single cable. [IMAGE][IMAGE]
[IMAGE]   The front power button/switch. Is that a standard pins setup as with the aftermarket motherboard? I am still contemplating whether to keep the Precision 3640 or not. I honestly like the Precision 3640 case design; that is pretty much why I want to keep it. But I need to know if the Precision 3640 case can be repurposed down the road and if the case's front panel power button has standard pins setup just like aftermarket motherboards.   Thanks!
Precision 3640 Motherboard: Is it closer to ATX or microATX?