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). This SFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions.