StarTech.com Cisco GLC-SX-MMD Compatible SFP Transceiver Module - 1000BASE-SX. This high-quality SFP module is designed for network expansion, providing Gigabit connectivity over fiber cables to remote segments. It guarantees 100% compatibility with Cisco GLC-SX-MMD, meeting OEM specifications and MSA industry standards. The module features multimode fiber type with an 850nm wavelength, a maximum data transfer rate of 1.25Gb/s, and a maximum transfer distance of up to 550m. It has a fiber optic LC duplex female connection, is fully hot-pluggable for convenient installation, and consumes less than 1W of power. A manufacturer's lifetime limited warranty is included. Specifications: Wavelength Type: 850nm, Data Rate Max: 1000Mbps, Product Range: Startech SFP Modules. Product Contents: SFP Module only. Country of Origin: China.