So. BetaFPV's new flight controller is great in many ways but you have to use a SH1.0 4-pin plug to USB adapter and they only give you one! We asked BetaFPV and got a bunch of these adapters so you can stash them everywhere and always have one when you need one.
The main advantage of using the plastic SH1.0 plug on the flight controller is that you don't have to carry around a heavy metal USB plug. Switching to a flight controller that uses this adapter is a great way to save a half gram off your build!
Most of BetaFPV's newer flight controllers have this plug on them like the Air Series 4-in-1 and the F4 12A flight controllers.