Gear sport USB pin identification

Hi. I’m posting this in the gear s3 section since there isn’t one for the Samsung Gear Sport (SM R600)

My gear has been completely dead for a few weeks and I don't have the charger with me. I want to directly charge it through the contacts on the motherboard but can’t find a pinout for the usb connectors (like the diagrams available for the gear s3)

Any diagram or way to udentify the pins would be much appreciated

Thanks