It's most likely a TB6560-derived board. To be brutally honest though, they're utterly crap - not the TB6560 bit necessarily (although they're not a great stepper driver IME), but the board and set up on the stock boxes you get with these routers is mediocre at best. I swapped mine out for one of the chinese planetCNC clones, and found that to be very good - to the point where I'm genuinely looking at shelling out for the genuine article, because it's worth supporting the guy responsible.
Anyway - back on topic: IIRC, those plugs at the bottom of the second picture are limit switch lines. I'm not 100% on that, but am fairly confident. You may have to pull the board out and see if there's a reference number silkscreened on the underside though.