Cisco WS-X4306-GB=

This module provides six ports of dedicated 1000BASE-X Gigabit Ethernet uplinks for high-speed backbone switch-to-switch applications or smaller server-farm applications. It makes use of versatile GBIC technology so intra-building multimode connections can be intermixed with long-distance campus single-mode connections. All ports can utilize Cisco Gigabit EtherChannel technology for high-speed interconnection applications.