10 Gigabit Ethernet Media Converter - 1 x 10G-5G-2.5G-1G RJ-45 port to 1 x 10GBASE-X SFP- port - 10GBASE-LR-SR Fiber Media Converter - 50-125 µm or 62.5-125 µm multi-mode fibre optic - cable. up to 300 m - 9-125 µm single-mode fibre optic cable. up to 80 km - Duplex-single fibre LC connector - External 12V DC power adapter