Nano Developer Kit Other Power Supply Options

Hi sir,
Nano Developer Kit are three types of power supply
1.Connect the J48 Power Select Header pins to disable power supply via Micro-USB
2.Enable 5V⎓4A via the J25 power jack.
3.Supply 5V⎓6A via the J41 expansion header (3A per pin).
J41 which pin to connect??

Hi, it’s pin 2 & 4 of J41.