Netpatibles 100% Cisco Compatible 1000Base-EX SFP Module, For Data Networking, 1 x 1000Base-EX Network, Optical Fiber, Single-mode

This product is Guaranteed 100% Compatible with the Manufacturer Original. The Cisco 1000BASE-EX SFP operates on standard single-mode fiber-optic link spans of up to 40 km in length. A 5-dB inline optical attenuator should be inserted between the fiber-optic cable and the receiving port on the SFP at each end of the link for back-to-back connectivity.