Cisco WAN Network Interface Module - expansion module - combo Gigabit SFP x 2

Boost the functionality of your Cisco systems with the Cisco Expansion Module. This network interface module is a plug-in module that follows the Gigabit Ethernet data link protocol. It features two 1000Base-X RJ-45 connectors and two Combo Gigabit SFP ports. This module works with the Cisco 4451-X router.