UGREEN CM209 USB 3.0 A To Gigabit Ethernet Adapter is a high-speed network adapter designed to add a stable, wired RJ45 Gigabit Ethernet port to laptops, desktop PCs, Nintendo Switch, and TV boxes via a USB-A port. Operating on USB 3.0 standards (5Gbps), it supports full network throughput up to 1000Mbps (1Gbps) with backward compatibility to 10/100Mbps networks, featuring LED activity indicators for connection status monitoring. Housed in a durable casing for effective heat dissipation, it provides driver-free plug-and-play functionality across Windows, macOS, Linux, ChromeOS, and Nintendo Switch systems.