Cisco-Compatible Sfp28 Transceiver Equivalent To Sfp-25G-Lr-S Smf Module; Tested For Seamless Integration With Cisco Switches For Reliable 25Gbps Connectivity Up To 10Km (6.2Mi) - Maximize Bandwidth For Data Migrations/High-Capacity Network Storage/Multimedia Upload - Technical Specs: 25Gbase-Lr Sfp28/25Gbe/Single Mode Fiber (Smf)/Lc Duplex Connector/1310Nm/Ddm/Dom - Works With Msa-Compliant Switches That Accept Uncoded Fiber Modules - This 25 Gigabit Optical Transceiver Is Backed For Life.