The USB cable is not data-sync capable, or the HG680P is not in OTG mode. Fix: Cut a standard USB A-to-A cable and splice the green (D+) and white (D-) wires together? No. Buy a proper "USB debug cable" from Amazon. Or, tape over the 5V pin (red wire) on the PC side.
If you flashed a generic image (like Armbian), the box might boot to a black screen. You need the right DTB: realunix pro hg680p install
: If your remote doesn't work immediately, try pairing it by holding the 'Home' and 'Back' buttons or use a USB mouse for initial setup. The USB cable is not data-sync capable, or
: Users report it is highly responsive and "super light," making it ideal for the HG680P’s 2GB RAM. App Compatibility : realunix pro hg680p install