HP pro 3305 motherboard

[eggman68]

I have been looking for a new motherboard which would be able to fit into a HP pro 3305 case, however I cannot find what form factor the motherboard I currently have is due to the limited information on HP computers. I believe it may be a micro ATX due to the fact its classed as a micro tower, however, the board looks much larger than a micro ATX board. So my question is, what is the form factor for the stock motherboard in HP pro 3305 PCs?

 

[RobWHS]

http://en.wikipedia.org/wiki/MicroATX

 

[Calvin7]

http://www.findlaptopdriver.com/hp-pro-3305-mainboard-mt-microtower-specs/
Form Factor: Micro-ATX