Asus Z9NA-D6 - Manual (Page 45)

ASUS Z9NA-D6 2-25
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.