Nintendo Switch —Compatible with Switch in Docked Mode. (For the Switch Lite, and handheld modes, try our USBC-E1000 Gigabit Adapter.) The built-in performance test on the Nintendo Switch provides inconsistent results due to its implementation, even with the built-in WiFi connection on the Switch.
https://www.amazon.com/Plugable-Ethernet-Gigabit-10-100-1000-Compatible/dp/B00AQM8586

