Adds 10GbE Connectivity to Mac Pro Towers, Windows PCs, or Linux Servers—Powerfully simple way to add high-performance 10GbE connectivity via optical cable to your computer with PCIe slots Cost-Effective—Includes 10GBASE-SR (short-range) SFP+ transceiver and supports connection up to 300 meters to 10GbE infrastructure via LC multi-mode fiber optic cable (sold separately) Easy Setup—Configure using your computer’s operating system network device configuration tools Optimized for Thunderbolt—Ideal for use in Sonnet’s Echo Express and xMac Thunderbolt-to-PCIe card expansion systems 2-year warranty and free lifetime technical support since 1986