What's in the box = Micro-USB HDMI Fire TV Stick 4K Alexei Voice Remote {2nd Generation) . HDMI| DD USB cable extender Power AAA {for power) cable adapter batteries 1. Connect your Amazon Fire TV Stick 4K Connect one end of the USB cable into your Amazon Fire TV Stick 4K and the other end into the power adapter. Plug your Fire TV Stick 4K into the HDMI port an your TV, then plug the purer adapter into a nearby outlet. Turn on your TV, then select the appropriate HOM input.