Amazon Fire TV 1st Generation User Manual page 47

Amazon Fire TV (1st Generation) supports up to two Xbox controllers through a wireless USB receiver. If you're
having trouble connecting an Xbox controller, make sure USB debugging is turned off on your device. To do this,
open Settings from the Fire TV menu and select System > Developer Options > USB debugging. If you need
more help connecting to your third-party wireless receiver, see the manufacturer instructions or included user
guide.
At this time, Xbox controllers are not compatible with Amazon Fire TV (2nd Generation). We're working to add
support for these controllers with an upcoming software release.
Trouble Pairing a Remote or Game controller?
If you're having trouble with the pairing process, go to Can't Pair a Remote or Game Controller.
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