40GBASE-SR4 fiber transceiver adds reliable 40Gb over fiber - StarTech.com lifetime warranty on all StarTech.com SFP modules - Maximum Transfer Distance of 10 km (6.2 mi) - QSFP+ transceiver module complies with MSA industry standards - LC fiber SFP has a low power consumption of < 2.5 W - Fiber QSFP+ module uses a cost-effective cabling alternative to fiber - Hot swappable with fiber optic modules - MTBF: 1 489 426 hours