Cisco GLC-BX-U= Base1000-BX 1310/1490 10KM SFP module (Brand New Sealed)
Max Reach Distance: 10km. Use only the SFP modules with your Modular Giga Ethernet line card. Form Factor: SFP. Device Type: Plug-in module. Model Number: GLC-BX-U. We will be happy to assist you. Fibre Type: SMF.