I am adapting the board for quadcopter usage. Actually really didn’t need the Nano version but it seemed the lightest. I have 5v and ground coming off a USB-C port from my application computer (NXP NavQ+). Can I use the USB power and ground to supply the modem. The board is driven off battery and can pull plenty of current from there. Really the only things I need of the hat connector are the airplane mode and power disable pins.
You can use the USB-C cable by soldering the PIN header to the other end and connecting the 5V and GND pins of the 40-pin SMD header on the HAT.
For further details on the pin outputs: