The Cisco Catalyst 4500 48-port 10/100/1000 PoE and premium PoE E-Series line cards are designed for high-performance LAN access applications. The Cisco Catalyst 4500 6-Port 10 Gigabit Ethernet E-Series Line Card can be deployed for high-performance 10 Gigabit Ethernet aggregation in the campus, in small to medium-sized networks as a core switch, or in high-performance wiring closets where additional 10 Gigabit Ethernet uplinks are required. The Cisco Catalyst 4500 6-Port 10 Gigabit Ethernet E-Series Line Card supports standard X2 optics as well as Cisco Twin Gigabit Converter modules as orderable options.