Picked up a Maixduino kit in Akihabara today to play with this. Just realised the device is powered by USB-C and I haven’t got any cable to connect to it yet.
You should be able to power it off of a coaxial power connector.
On the road atm, haven’t got anything with me. I still need USB-C though for serial comms??
If you have a serial adapter, then you can use that. Of course, USB-C is probably easiest.
Not at hand, went and scored a USB-C to USB-A cable \o/