Cisco Systems, Inc. WS-X5234-RJ45 Ethernet Interface Module

Cisco WS-X5234-RJ45 Ethernet Interface Module is a Catalyst 5000/5500‑series interface module that adds 34 independent 10/100BASE‑T RJ‑45 Ethernet ports to a supported Cisco chassis, enabling high‑density copper LAN access. Designed to slide into a compatible Catalyst switch backplane, it provides native 10/100 Ethernet connectivity for desktops, printers, and other user devices, with auto‑negotiation up to 100 Mbps and support for both half‑ and full‑duplex operation. Each port offers auto‑MDI/MDI‑X crossover handling to simplify deployment and minimize cabling issues in mixed environments. This module is typically deployed at the access layer or in LAN aggregation scenarios to expand edge connectivity within enterprise networks, and it is referenced as a standard option in Cisco's Catalyst 5000/5500 product guidance for module compatibility. When planning a deployment, verify your specific chassis and supervisor support for WS‑X5234‑RJ45, and ensure adequate power, cooling, and backplane capacity to accommodate the dense port count.