Cisco WS-X4306-GB enterprise networking (router/Catalyst switch/UCS families) Switch / Carrier Ethernet Line Card

The Cisco WS-X4306-GB is a 6-port Gigabit Ethernet switching module for the Catalyst 4000/4500 series modular chassis, providing six GBIC-based Gigabit Ethernet uplink or server-attach ports on a single line card. It fits a Catalyst 4000/4500 chassis slot alongside the Supervisor Engine and other line cards, adding Gigabit uplink or high-bandwidth server-connection capacity to the platform, with the actual transceiver type (SX, LX or ZX) determined by the GBIC fitted rather than by the module itself. The Catalyst 4000 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 with additional Gigabit uplinks. Tech-Star (UK-based, shipped worldwide) stocks Cisco line cards to support ongoing network maintenance projects; confirm exact chassis and Supervisor compatibility before ordering.