The usb31000nds usb 30 to gigabit ethernet network adapter adds a single rj45 ethernet port to a usb enabled computer system with support for gigabit network connections at full bandwidth when used with a usb 30 host connection unlike usb 20 adapters this compact usb 30 nic works with 101001000 mbps networks and offers backward compatibility with usb 201x computer systems speed limited by usb bus making it an ideal portable replacement lan adapter or laptop accessory support for