It's just a generic micro-ATX box, innit?
What do you want to put in there? Might be simpler just to keep the FM2 board that's in there and upgrade to an appropriate A8 of A10 if you can. (Depending on CPU support.)
future proof .
Most likely, if you replace the motherboard, you'll need a new OS OEM's (like Gateway, dell etc) have their OS tied to the motherboard, & a new one will 'deactivate' the current OS.