I'm having a big problem right from the start.

First of all, I've been using pixhawk for a long time.

This is very convenient.

just connect usb

But I don't think it's Voxl

I don't know what adb is, but I followed the docs step by step.

It took me 3 days to complete all the work, but I can't connect this to QGC.

I can't even get the port to be precise.

What's the problem?