{"product_id":"cisco-systems-ws-x5104-network-interface-module","title":"Cisco Systems WS-X5104 Network Interface Module","description":"\u003cdiv\u003e\u003cp\u003eThe Cisco WS-X5104 Network Interface Module is a four-port FDDI (Fiber Distributed Data Interface) interface card designed for Cisco Catalyst 5000 series switches, expanding fiber-based backbone connectivity within enterprise networks and enabling redundant, high-bandwidth links across campus, data-center, or metropolitan-scale backbones. Each port provides an independent FDDI channel over single-mode fiber, supporting reliable long-distance links and improved resistance to electrical noise compared with copper-based interfaces, making it suitable for core or distribution-layer deployments where FDDI remains in use. As a legacy Catalyst module, it is installed in a compatible Catalyst 5000 chassis with the appropriate supervisor module and backplane to carry FDDI traffic, and is commonly used to create FDDI backbone rings or connect multiple switches in a fiber-based fabric. The WS-X5104 sits among Cisco's WS-X Catalyst 5000 family and represents the older generation of high-availability fiber options, frequently encountered in retrofit projects and networks maintaining legacy FDDI infrastructure. \u003c\/p\u003e\u003c\/div\u003e","brand":"Cisco","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51678091870510,"sku":null,"price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_3bb76e98-70d8-4003-aa9b-e55bfb584603.jpg?v=1769571624","url":"https:\/\/plgautomation.com\/products\/cisco-systems-ws-x5104-network-interface-module","provider":"PLG Automation ","version":"1.0","type":"link"}