Cisco 2-Port SFP Gigabit WAN Module for 4451-X Router

The Cisco NIM-2GE-CU-SFP= is a plug-in network interface module that adds four additional Gigabit Ethernet options to a Cisco 4451-X Integrated Services Router. By combining two copper RJ-45 ports with two open SFP slots, it gives network teams the freedom to choose either standard twisted-pair cabling or fiber uplinks, all within a single compact card.

Each port functions as a Layer 3 routed interface, so you can carve out secure WAN links, perform inter-VLAN routing, or tie directly into distribution switches without placing extra load on the router’s built-in switch ports. IOS XE detects the module automatically, which means installation is as simple as sliding it into the NIM bay, powering up, and assigning IP settings from the familiar Cisco CLI.

This module fits naturally in branch offices, campus edge locations, and small data centers where you need more Gigabit density but want to keep wiring straightforward. Use the copper ports for nearby servers or access switches, and reserve the SFP slots for longer fiber runs to aggregation gear or service-provider handoffs. The result is a flexible port mix that can evolve with your network’s growth.

Designed for reliable operation from 32 to 104 degrees Fahrenheit and built to Cisco’s hardware standards, the module delivers dependable performance in rack rooms, wiring closets, or climate-controlled data centers. If you already rely on the 4000 Series ISR platform, this card is an easy way to extend its reach without adding separate switches or media converters.

Highlights:

• Two 1000Base-T RJ-45 ports for copper Ethernet connections
• Two 1000Base-X SFP slots for fiber or copper SFP transceivers
• Compatible with Cisco 4000 Series Integrated Services Routers, including the 4451-X
• Layer 3 routed port operation supports WAN access and inter-VLAN routing
• Simple plug-in installation with automatic IOS XE recognition
• Operating temperature range: 32 °F to 104 °F
• Physical dimensions: 1.3 in × 3.5 in × 7.2 in