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Cisco Systems Consumer Products - Cisco 1000Base-EX SFP Module - For Data Networking - 1 x 1000Base-EX Network - Optical Fiber - Single-mode - Gigabit - Unknown

This product is Guaranteed 100% Compatible with the Manufacturer Original. The Compatible 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.