4Pack 1.25G SFP LC Module 1000Base-LX(SMF,1310nm,20km,DDM) Single-Mode Transceiver for Cisco GLC-LH-SMD,Ubiquiti UniFi,Meraki MA-SFP-1GB-LX10,Fortinet,Mikrotik,TP-Link,Netgear,TL-SM311LS,D-Link,Intel 4 PACK Dual LC Single-Mode Fiber Module; Fiber Type:1.25Gb/s Wavelength: 1310-nm; Reach: up to 20KM Meters; with Advanced DDM Function to monitor real-time parameter and state on fiber links. SFP MSA Compliant, IEEE 802.3z compliant. Low Power Consumption: The power consumption is only less than 1watt, that can save costs wisely. GESD will always provides innovative and cost-effective optical networking solutions. Each sfp module is individually done test before packing. Widely Used in fiber switches, routers, NIC, server or other fiber optic equipments with 1Gb SFP ports.?Compatible with Cisco GLC-LH-SMD/GLC-LH-SM/SFP-GE-L, Meraki MA-SFP-1GB-LX10, Ubiquiti UF-SM-1G, Mikrotik, Fortinet, TP-Link,TL-SM311LS,D-Link. Plug and Play Durable: Hot-swappable, Rotate the ring latch down at 90 degree angle to unlock, then pulling transceiver out from switch. Less than 1.05W power dissipation and heat-conducting gasket provide superior heat dissipation function.