Cisco 12-Port Gigabit Ethernet Line Card Plug-in Module

The Cisco WS-X4612-SFP-E= is a 12-port Gigabit Ethernet line card that adds high-capacity connectivity to a Cisco Catalyst 4500 series switch. It installs directly into an available slot, expanding the switch without the need for extra rack space or additional power cords.

Each port supports 10, 100, and 1000 Mbps speeds, so you can connect legacy devices today and move to full Gigabit throughput when your traffic demands it. Jumbo frame support helps large data transfers move efficiently, which is valuable for applications such as server backups, virtualization traffic, or video streams that tend to overwhelm smaller frame sizes.

In a growing campus or enterprise network, this module provides a practical path to additional access-layer ports. Deploy it in a wiring closet to aggregate user workstations, or place it in a data center row where new servers need consistent performance. Because it is part of the Catalyst 4500 family, it uses the same management interface and software features you already know, so day-to-day operation feels familiar.

Installation is straightforward. Slide the card into the chassis, secure it, and the switch automatically detects the new module. If you plan phased upgrades, you can populate empty slots as bandwidth requirements increase, keeping long-term costs predictable.

• 12 Gigabit SFP ports for flexible network expansion
• Plug-in module design simplifies installation in Catalyst 4500 series switches
• 10/100/1000 switching lets you mix legacy and high-speed devices on one card
• Jumbo frame support improves performance for large data transfers
• Fully compatible with existing Cisco Catalyst 4500 management and feature set