An SFP fibre optic transceiver is a device that plugs into an SFP port on your network switch and allows it to communicate via Ethernet over a fibre cable. The type of transceiver you select will vary depending on the distance and fibre cabling infrastructure you require. In addition, many switch vendors require that transceivers are "coded" to enable them to work.FEATURES Supports Single-Mode Fibre 2x LC connectors 1310nm Tx/Rx Wavelength 10Gbps SFP data rate 10km cable distance Operating Temperature: 0 to 70°C Pack of 2 WARRANTY2-year limited warranty