In Stock: CISCO GBIC, CISCO SFP, CISCO SFP+, CISCO XFP, CISCO XENPAK, CISCO X2 Transceiver module *NEW SEALED* CISCO GLC-ZX-SM 1000BASE-ZX SFP transceiver module for SMF, 1550-nm wavelength, dual LC/PC ... haven't uploaded to Alibaba, for more details, please feel free to contact us, thanks! Cisco SFP transceiver module 1000BASE-ZX SFP 1550nm 80km GLC-ZX-SM