Increases the number of ports on ultrabooks netbooks notebooks and pcs with a usb interface by one rj 45 network connection led function indicator gives information about the device status power is conveniently supplied via the usb connection for 101001000 mbps networks backward compatible with usb 20 plug and play rj 45 utpstp connectionn system requirements operating system windows 1081873264 bit and mac os x as of version 106 note for consumers the usb 30 gigabit ethernet adapter is not c