2 Year Warranty - We love our Plugable products, and hope you will too. All of our products are backed with a 2-year limited parts and labor warranty as well as Seattle-based email support. OS Compatibility - Works with Windows 11, 10, 8.x, and 7, macOS 10.7 and newer, iPhone 15 / Pro / Pro Max, and Linux Kernel 3.2 and newer. Driver download and install may be required on older OS and Kernel versions. Some core features require driver install on macOS. Use Existing Cabling - Upgrade your network without updating your cables. 2.5 Gigabit Ethernet signals are designed to work on Cat 5e cabling, just pair your USB Ethernet Adapter with 2.5Gbps-capable switches/routers. Keep USB Universal - Hybrid 2-in-1 cable converts from USB-C to USB-A so you always have the right connection (USB 3.0 required for full performance). Faster Than Gigabit - Double the performance of a traditional Gigabit Ethernet adapter when used with switches or routers capable of 2.5Gbps for faster file transfers, smoother video conferencing, and seamless streaming.