Cisco SM-X-6X1G= 6-Port Gigabit Ethernet, Dual-mode GE/SFP, SM-X Module

Cisco SM-X-6X1G= SM-X-6X1G Gigabit Ethernet Service Module - Expansion module - Gigabit Ethernet x 6 + Gigabit SFP x 6 - for Cisco 4451-X&nb...