10GBase-BX SFP+ - Downstream. 10GBASE-BX fiber transceiver adds reliable 10Gb over fiber - StarTech.com lifetime warranty on all StarTech.com SFP modules - Maximum Transfer Distance of 10 km (6.2 mi) - SFP+ transceiver module complies with MSA industry standards - LC fiber SFP has a low power consumption of < 1 W - Fiber SFP+ module uses a cost-effective cabling alternative to fiber - Hot swappable with fiber optic modules.