Catalyst 4000 GE Module, Server Switching 18-Port (GBIC)
Cisco Gigabit Ethernet Module 18-Ports (GBIC), for Catalyst 4000, 1 Gbit/s, Gigabit Ethernet, Wired, IEEE 802.3z, 18x Gigabit Ethernet ports
Cisco Gigabit Ethernet Module 18-Ports (GBIC), for Catalyst 4000. Transfer rate: 1 Gbit/s, Data link protocols: Gigabit Ethernet, Connectivity technology: Wired. I/O ports: 18x Gigabit Ethernet ports