How do I check 8RDA+ board rev?

I just got it from NewEgg today. Its stamped on the NB isn't it? The last two digits are either A2 or A3 right? I am about to remove the NB heatsink and do the Vantech mod and I want to check. Thanks.

one of the corners on very small letters, should say rev1.1. I belive is the corner close to the PCI slots.
The stepping is a different thing. that's on the NB and the chip should state either A2 or A3 at the end.
hope it helps.

I've got it. Rev 1.1 was in the corner of the board and the NB has A3 as well. Thanks.