It's designed to help for TV slots that won't allow the Fire TV Stick in on its own.
But it can also be used to keep your Fire TV Stick from being so close.
This will not only give it a nice clear pathway for Wi-Fi signals but the device can also breath a bit too.
Being close up to the TV can get quite hot which also hampers the Stick's performance.
Can't find your HDMI extender?
If you've lost your Fire TV Stick's HDMI extender, fear not.
You can buy a replacement pretty cheaply on Amazon.
A pair are available for as little as £4 - .
Prices were correct at the time of writing, but may have since changed. Always do your own research before making any purchase.
Even Amazon's own documentation says the HDMI extender is "recommended for best Wi-Fi reception".
Users on Reddit have urged others to try out the gadget if they're having connection troubles.
"I just plugged in the Stick without the extender, and it dropped the WiFi signal constantly the first 5 days, so I returned it and exchanged it for another," one person wrote.
"When I set up the 2nd one I decided to use the extender on that one.
"And for over a month now, not a single dropped signal."
Another said: "I got no signal at all until I used the extender. Saved my life."