How to use USB Ethernet adapter on MacBook Pro
It turns out I was using an old driver that was given on Insignia's website. I found that it is a Realtek adapter and the most updated driver is found here: http://www.realtek.com.tw/Downloads/downloadsView.aspx?Langid=1&amp;PNid=13&amp;PFid=56&amp;Level=5&amp;Conn=4&amp;DownTypeID=3&amp;GetDown=false. This driver fixed all my problems.