This is the combo of 1 Switch and 1 Ethernet Adapter (USB 3.0 and 2.0 ) They are super easy to use, lightweight. You can bring Ethernet Adapter everywhere to avoid unstable WiFi connection- Provide Ethernet for a device without a port. This USB adapter is a convenient solution to convert a port into a 10/100/1000 base-T Ethernet Port. It works with Nintendo Switch.