ConnectivitySuper Speed USB 3.0 Male A to 2.5G RJ45 Female Ethernet adapter connects your computer, Raspberry Pi 3 or tablet to a router, modem or network switch for network connection. It adds a standard RJ45 port to your Ultrabook, notebook or Macbook for file transferring, video conferencing, gaming, and HD video streaming. Upgrade your existing Ethernet port USB 3.0 to 2. 5Gbps Ethernet adapter is an easy to use solution to quickly upgrade your current RJ-45 LAN port to 2. 5Gbps. Meet the requirements to get 2.5G Ethernet: 1), downloaded the drivers from Realtek offical site (chip: RTL8156B); 2), check if your Network card and your Router can support 2.5G Ethernet or not; 3), make sure to connect Cat 6 or above lan cable to the Router.