10Gtek 1.25G SFP Transceiver 1000Base-LX, 1310nm SMF, up to 10 km, Compatible with Cisco GLC-LH-SMD/GLC-LH-SM/SFP-GE-L, Meraki MA-SFP-1GB-LX10, Ubiquiti UF-SM-1G, Fortinet, Mikrotik, Pack of 10 : User Manual