Cisco SFP Module GLC-SX-MM Compatible Transceiver Technology: 1000BASE-SX SFP,MMF,850nm, 550m Manufacturer :AAC Notes :3 Year Warranty Contact : Tanny AAC Telecom CO.,Ltd P: 86-755-6128-3626 F: 86-755-6128-3828 E: Tanny@aactelecom.com ...Read More