The Amazon Fire TV Stick is a great low-cost way to stream media to a TV.
While it can be a great device it does need a good WiFi signal to stream data.
For most, this is likely not a problem and streaming over wireless works very well.
With that said there are many scenarios when the WiFi does not work well and using an Ethernet wired cable is a much better solution.
If you find yourself needing to have Ethernet work with the Fire Stick there is a low-cost device that will convert a signal.
It is an Ethernet adapter that lets a Fire Stick work over a wired connection.
Here it is on Amazon
Amazon Ethernet Adapter for Amazon Fire TV Devices
OTG has been used by Android smartphones for many years as a way to connect wired keyboards, mice, and external storage to an Android device including the Fire Stick.
OTG comes built into the Fire Stick and can be used in the same way.
Fire Stick Version Compatibility
If you have a Fire TV Stick Gen 1 it will need to be Rooted for OTG to work.
If you have a Fire TV Stick Gen 2 it will work by default and simply need to be plugged in.
If you have a Fire TV Stick Gen 3 4K version it will work by default and simply need to be plugged in.
OTG is Plug and Play with the second and third-generation 4K version but the first generation will need to be rooted.
Basically, unless you are a technical person ready to Root the Fire Stick it will only work with the second and third-generation 4K version.
The most common way to tell them apart is the size, with the Second Gen Fire Stick physically bigger than the first version.
There are several Ethernet adapters for the Fire TV stick with the official Amazon version the most popular.
There is also a UGREEN Ethernet Adapter for Fire TV Stick that is popular.
Having a wired Ethernet connection is always better and faster than a WiFi signal with no interference.
The setup is quick and easy by plugging in the cables.
It will only work on the second and third-gen 4K Fire TV Stick so be sure which version you have.