Asus RS700-X7/PS4 - Manual (Page 49)

ASUS RS700-X7/PS4 4-7
6. DDR3 thermal event setting (3-pin DIMMTRIP1)
This jumper allows you to enable/disable DDR3 DIMM thermal sensing event
pin.
7. PMBus 1.2 PSU select jumper (3-pin SMART_PSU1)
This jumper allows you to select PSU PMBus version, Set to pins 1-2 for
PMBus, set to pins 2-3 for Others.