I have a P55A-GD65 motherboard.
I'm wondering which position of the JBAT1 jumper corresponds to 1-2 and which to 2-3, as I cannot see any labeling on the motherboard, nor is the manual clear on this topic.
If you never touched the jumper before, and the board has been working fine, then the jumper is currently in the 'KEEP DATA' position, which is pins 1-2.