EVGA NFORCE 780I SLI - Manual (Page 38)

Hardware Installation
Jumper Settings
The motherboard contains a 3-pin BIOS configuration jumper that enables all
board configurations to be done in the BIOS Setup program.
The silk screen on the motherboard shows a ∆ next to pin 1.
Clear CMOS Jumper: CLR_CMOS
The motherboard uses the CMOS RAM to store all the set parameters. The
CMOS can be cleared by removing the CMOS jumper.
Use the following procedure to clear CMOS:
1.
Turn off the AC power supply and connect pins 1 and 2 together using the
jumper cap.
2.
Return the jumper setting to normal (pins 2 and 3 together with the jumper
cap).
3.
Turn the AC power supply back on.