USB-C and USB-A ports, powered from the car's USB port. If the port cannot supply enough current, the box drops when video starts; a Y-cable to a 12 V charger is the standard fix.
Why it matters
Power is the first of three failure buckets for these boxes, and the cheapest to rule out.
Questions we get
Why does it reboot when video starts?
The port is supplying bare-minimum current; add a Y-cable.
Which port does it go in?
The one that runs wired CarPlay.
Related
Facts on this page come from the manufacturer's specification sheet, approval sheet, manual and quotation as reflected on the product page, checked September 15, 2026.