The RXFXSMSFPST is a Cisco SFP-10G-ER compatible fiber transceiver module that has been designed, programmed and tested to work with Cisco brand switches and routers. It delivers dependable 100 MbE connectivity over fiber cable, for 100Base-LX10 compliant networks, with a maximum distance of up to 40 km (24.8 mi). Technical Specifications: Wavelength: 1310nm Maximum Data Transfer Rate: 100 Mbps Type: Single Mode Fiber Connection Type: LC Connector Maximum Transfer Distance: 10 km (6.2 mi) MTBF: 53,972,659 hours Power Consumption: < 1.3W Digital Diagnostics Monitoring (DDM): Yes This SFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions. StarTech.com SFPs All StarTech.com SFP & SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of SFP modules and direct-attach SFP cables, providing the convenience and reliability you need to ensure dependable network performance.