There is an easy process of how to use Firestick with the USB. Initially, you have to disconnect the cable from your Firestick Device. Then it comes to connect the cable to the micro USB socket on the OTG cable. Next comes to plug the USB HUB into the USB socket on the OTG cable. Finally, insert the micro USB plug into the power socket on the Fire TV Stick. For the rest of the help, online Firestick No Signal customer support service is out there.