1. Press OK+VOD for 3s till LED light up
2. RCU enters Pairing Mode, keep the distance between the RCU and the USB dongle within 30cm,
3. insert the USB dongle into the device,
4. LED flash 3 times then turn off, means pairing succeed.
The pairing mode will only last for 30s, please finish all the steps within the time limitation.
