Zhjvihx Ethernet Adapter, Ultra High Speed Usb 30 Network Ethernet Adapter For Home OfficeFunction: 1 USB 30 to RJ45 gigabit Ethernet Network Adapter, Wired Network card for Laptops 2 RJ45 interface to network cable input, USB 30 output to computer (backwards compatible with USB 20) 3 Ultra high speed network, the transmission speed is up to 1000Mb..