Cisco WS-X6748-GE-TX

High-Performance 48 Port 10/100/1000 Mbps Ethernet over Copper Module
WS-X6748-GE-TX for Enterprise and Service Provider Data Centers
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 and 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-demand, high-density Gigabit Ethernet requirements across all 48 ports.
Other Key Features include:
Up to 386 high-performance 10/100/1000 Ethernet over copper ports in a single Cisco Catalyst 6500 Series chassis
Flexible, scalable, field-upgradable daughter card options to support full locally distributed forwarding through the DFC3A for investment protection and "pay as you grow" performance
Jumbo frame support, up to 9000 bytes, commonly required in data centers.
RJ-45 interfaces to support existing copper cabling infrastructures
Future support for an integrated time-domain reflectometer for cable fault detection and ease of troubleshooting

Cisco WS-X6748-GE-TX datasheet & specifications