USB Ethernet Adapter: This is a USB 3.0 male A to RJ45 female ethernet adapter which connects your computer or tablet to a router or network switch for wired network connection. It adds a standard RJ45 port to your Ultrabook, notebook for file transferring, video conferencing, gaming, and HD video streaming. Gigabit Networking for Fast, Stable Data Transfers: Full 10/100/1000Mbps gigabit ethernet - faster and more reliable than most wireless connections. Plug and Play in Nintendo Switch: It helps connect your Nintendo Switch to a wired network system, a much faster and more stable network environment than a WiFi connection. Foldable and Portable design ideally suits your Ultrabook: The USB RJ45 adapter is mini and portable, perfect to take on the go. Replace Ethernet Port: USB 3.0 to Gigabit Ethernet adapter is a good laptop network accessory to replace a broken Ethernet port.