***** **********Best Quality Guranteed. *****Compatibility - for Intel E10GSFPSR, also for other open switchs, please contact us, any product quality and compatibility issues*****Main Specs - 10Gb/s rate, multiple mode, duplex LC connector, 850nm wavelength, up to 300m transmission distance, DDM Support*****Usage - rotat the ring latch down at 90 degree angle to unlock, then insert it to the port*****Application - used in fiber switches, routers, NIC, server or other fiber optic equipments with 10Gb SFP + ports*****30 days Free-Returned, 3 years Free Warranty and lifetime technology support