The J9151A-BX-D-ST is an HP J9151A-BX-D compatible downstream fiber SFP+ transceiver which pairs with Star Tech.com's J9151A-BX-U-ST. They are designed, programmed & tested to work with 10 G Base-BX compatible MSA switches & routers. The SFP+ transceiver module supports a maximum distance of up to 10 km (6.2 mi) & delivers dependable 10 Gb E connectivity over fiber cabling. 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.