The revision number on your motherboard looks like this: "REV: X.X." For example, "REV: 1.0"
means the revision of the motherboard is 1.0. Check your motherboard revision before updating
motherboard BIOS, drivers, or when looking for technical information.
It is on the lower left hand side of the motherboard. Please see this manual for a picture of exactly where:
http://download.gigabyte.eu/FileList/Manual/mb_manual_ga-h61m-s2pv_e.pdf