A:AnswerHi, Mark.
This Adapter is exclusively designed to be used with computers since it comes with drivers to install. Thus, it would not work for your Nintendo Switch.
Cesar G. - Insignia Support
A:AnswerDepends on how you configure your networking. I don't think it's an idea situation long term. Look for a USB hub or switch to add Ethernet ports to your network. You can 4 port GB switch for under $20. 8 ports are slightly more.
A:AnswerHi.
Correct. If you require the driver you can contact us on the link below my signature for further orientation on how to get it.
Charles V. - Insignia Support
https://www.insigniaproducts.com/contact-us