UGREEN CM199 USB-C 3.1 GEN1 To Gigabit Ethernet Adapter is a high-speed network adapter designed to add a stable, wired RJ45 Gigabit Ethernet port to USB-C or Thunderbolt 3/4-enabled laptops, tablets, and smartphones. Operating on USB 3.1 Gen 1 standards (5Gbps), it supports full network throughput up to 1000Mbps (1Gbps), backward compatibility with 10/100Mbps networks, and features LED activity indicators for connection status monitoring. Housed in a durable aluminum casing for effective heat dissipation, it offers driver-free plug-and-play functionality across Windows, macOS, Linux, ChromeOS, and iPadOS devices.