GLC-LH-SMD=, Cisco 1000BASE-LX/LH SFP transceiver module for MMF and SMF, 1300-nm wavelength, extended operating temperature range and DOM support, dual LC/PC connector | EET
Amazon.com: 10Gtek 1.25G SFP Transceiver 1000Base-LX, 1310nm SMF SingleMode Fiber Optic Module, up to 10 km, for Cisco GLC-LH-SMD, Meraki MA-SFP-1GB-LX10, Ubiquiti UniFi, Fortinet, Mikrotik, TP-Link TL-SM311LS : Electronics