Cisco Systems is the worldwide leader in networking for the Internet. Cisco's Internet Protocol-based (IP) networking solutions are the foundation of the Internet and most corporate, education, and government networks around the world. Cisco provides the broadest line of solutions for transporting data, voice and video within buildings, across campuses, or around the world.This Fast Ethernet switching module (100BaseTX 12 port) provides 12 switched, 100-Mbps (100BaseTX Category 5 UTP), full or half-duplex Fast Ethernet ports using 12 RJ-45 connections.