Please help to figure out if my motherboard is revision 1.0 or 2.0

[BartysIdeas]

Hello. So I bought this computer for really cheap, and I want to upgrade the cpu. but, I need to know what revision it is to see what kind of cpu`s I can install.

My motherboard is Gigabyte GA-M57SLI-S4

specs:
amd athlon 64 x2 6000+
4gb ddr2 ram
nvidia geforce 8400gs
250w power supply.
EVERYTHING IS TO BE UPGRADED EXCEPT THE RAM.

 

[lucas_7_94]

Top left corner of the Motherboard it says the revision.

 

[rgd1101]

Not listed in bios?