JR Port Cover for X9D Plus
The S.Port AirLink S is a connecting tool to help you program and flash firmware to devices such as the S6R/S8R.
It can be used by inserting into the USB port of a PC and connecting to the S.Port of the device. Or it can be used wirelessly through Bluetooth which allows wireless S6R/S8R configuration and real time telemetry dashboard.
(At the moment the Free Link app is only available in the Apple Store.)