There is a data channel but just use a pinout https://www.google.com/search?q=usb+c+pd+pinout
+12v & gnd
The power supply for the ROCK Pi is really a challenge because unlike other SBC less than 10w power consumption which you can just use 5V/2A to power it. the ROCK Pi’s design power consumption is 15w to 18w. Take USB 3.0 as an example, the spec current for USB 3.0 is 900mA, one port is 4.5W max. So if you have four USB 3.0 ports like NanoPi M4, you need provide 22w at least for the USB only. To meet the higher power consumption of the electronic devices, USB PD is come up with up to 100w power delivery. We support that on ROCK Pi, with USB PD, we can support common USB PD adapter voltage 9V/12V/15V/20V to power the ROCK Pi. For example, you can just plug the 87W power adapter of recent generation Macbook Pro to ROCK Pi and not worrying damage the board. But there is a disadvantage of USB PD, that is the USB PD adapter are expensive currently. Remember we want to design the ROCK Pi for all the countries? Yes, we want a lower cost power adapter solution. So we add Quick Charge adapter support for it. Because everybody uses smart mobile phones nowadays, and even the entry level smart mobile phones supports Qualcomm Quick Charge. So we can just re-use the power adapter of mobile phones to power your ROCK Pi. It can work at 9V level by default, which can provide 9V/2A 18W power supply for ROCK Pi.
Please note that, although we don’t recommend, you can actually power ROCK Pi with ~5V adapter, we have no issue powering it with the 5.1V/3.4A adapter from Radxa Rock2. But if the power adapter output is just 5V, the actual voltage from the adapter to the cable on the other end will drop a little bit, it may not boot."
Which is sort of strange as Radxa say anything up to 20v but the spec on the onboard buck seems to be a max of 16v/18V.
12v your fine I have been looking and they all seem the same with one side 2 big pads for vcc & gnd with data lines other side.