As the premier modular multilayer Cisco switch for integrated data center switching, the Cisco Catalyst 6500 Series now offers a new, high-performance 48-port 10/100/1000 Ethernet over copper module designed specifically for use with the Cisco Catalyst 6500 Series Supervisor Engine 720 in data center & distribution layer deployments. The WS-X6748-GE-TX features a 40-Gbps interconnection to the Cisco Catalyst 6500 Series Supervisor Engine 720's switch fabric-ideal for high-dem&, high-density Gigabit Ethernet requirements across all 48 ports. Other Key Features include: &183; Up to 386 high-performance 10/100/1000 Ethernet over copper ports in a single Cisco Catalyst 6500 Series chassis &183; Flexible, scalable, field-upgradable daughter card options to support full locally distributed forwarding through the DFC3A for investment protection & "pay as you grow" performance &183; Jumbo frame support, up to 9000 bytes, commonly required in data centers. &183; RJ-45 interfaces to support existing copper cabling infrastructures &183; Future support for an integrated time-domain reflectometer for cable fault detection & ease of troubleshooting.