The 455889-B21-ST is a HP 455889-B21 compatible fiber transceiver module that has been designed, programmed & tested to work with HP brand switches & routers. It delivers dependable 10 Gb E connectivity over fiber cable, for 10 G Base-LRM compliant networks, with a maximum distance of up to 200 m (656 ft). This SFP+ fiber module is hot-swappable, making upgrades & replacements seamless by minimizing network disruptions. Star Tech.com offers a wide variety of SFP modules & direct-attach SFP cables, providing the convenience & reliability you need to ensure dependable network performance.