Plug your Fire TV Stick into the HDMI extender, and then plug the HDMI extender into an available HDMI port on your TV. 1  Turn on your TV and select the HDMI input channel for the port you used to connect your Fire TV Stick.2  Set up your remote.efore you begin, find the two AAA batteries included with your remote. 1  Plug the small end of the USB power cord into your Fire TV Stick and the other end into the power adapter. 2  Then, plug the power adapter into a power source. 3  Note: We recommend that you use the power adapter and plug it into a power outlet.