Cisco WS-X4448-GB-RJ45= enterprise networking (router/Catalyst switch/UCS families) Switch / Carrier Ethernet Line Card

The Cisco WS-X4448-GB-RJ45= is a 48-port 10/100/1000 copper Gigabit Ethernet switching module for the Catalyst 4000/4500 series modular chassis, providing 48 RJ-45 auto-sensing Gigabit ports on a single line card. It fits a Catalyst 4000/4500 chassis slot alongside the Supervisor Engine and other line cards, adding high-density copper Gigabit port capacity to the platform for server-farm or high-bandwidth wiring-closet deployments where 10/100 density modules are no longer sufficient. The Catalyst 4000/4500 series is a long-established, still-deployed legacy switching platform, and genuine line cards of this type are a routine requirement for maintaining full port capacity, replacing a failed card, or extending an existing chassis. Specifiers should confirm the exact chassis and Supervisor Engine compatibility before ordering, since some Catalyst 4000-series line cards require a minimum Supervisor Engine generation. Tech-Star (UK-based, shipped worldwide) stocks Cisco line cards to support ongoing network maintenance projects.