The USB Ethernet Adapter expand 3 USB 3.0 port to connect more, 4 in 1 USB 3.0 to Ethernet adapter features a 1000Mbps RJ45 gigabit port. And all hub ports can work simultaneously. Use the Ethernet port to maintain fast and a more stable wired network connection speeds up to 1 Gbps, backwards compatible with 100Mbps/10Mbps RJ45 LAN. To reach 1Gbps, please make sure to connect with CAT6 & up Ethernet cable.