Is there an ethernet to USB cable or adaptor for an Android tablet?

Nelle has a Toshiba Thrive Android tablet, but anytime she has to download something big, she has to connect to Wi-Fi. She has problems finding and connecting to public Wi-Fi spots, though.

She'd rather get an ethernet to USB adaptor so she can hardwire it in to the internet at her work. Leo says that is an interesting solution. She should look into the Bobjgear Ethernet Adaptor for Android, which should be able to do that.