Cisco is the worldwide leader in networking for the Internet. Cisco provides the broadest line of solutions for transporting data, voice and video within buildings, across campuses, or around the world. Cisco solutions ensure that networks both public and private operate with maximum performance, security, and flexibility.PRODUCT FEATURES:48 ports;100BASE-LX10 SMF (MT-RJ);Cisco IOS Software Release 12.1(13)EW or later;IEEE 802.3ah, IEEE 802.3;Metro Ethernet: designed for both residential and small-business customers over distances up to 6.2 miles (10 km).