After purchasing this to add to my “toolkit”, I decided to try it on my two Fire tablets.
On my 2020 (10th gen) Fire HD 8 Plus (running Fire OS 7), the results were as I expected. It recognized a USB device was attached, but did not recognize it as an Ethernet adapter.
One my 2022 (12 gen) Fire 7 (running Fire OS 8), however, it was both recognized as an Ethernet adapter and WiFi was automatically disabled and the Ethernet adapter used instead.
The speed test result (121.62 Mbps) was on a nominally 250 Mbps internet connection, slightly behind the 138.50 Mbps my HD 8 Plus achieved via WiFi, but ahead of the 109.98 Mbps result the Fire 7 obtained via WiFi.
Construction of this device seems solid. One possible concern is that I noticed the second Ethernet cable (a Monoprice Flexboot series Cat6) I used it with was difficult to remove, even with the locking tab on the cable fully depressed.
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