+12V is high

[Skinnypup]

I have a Asus A7N8X Deluxe motherboard and a Athlon XP 2600+ cpu. I installed the Asus Probe tool and it says my +12 is currently 13.056 but the status is OK. What does the +12 voltage mean? Should I worry?

 

[rox_lukas]

+12 V usually powers hard drives, cd or dvd-rom drives and cooling devices (fans, peltier etc.).