REFURBISHED
Cisco
Cisco NIM-1GE-CU-SFP Refurbished — 1-Port GE/SFP WAN NIM Module
MPN: NIM-1GE-CU-SFP
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Lifetime
Warranty
ISO 9001
Certified Testing
R2v3
Responsible Refurb
25+
Years
5K+
Customers
ISO
Certified
✓
Tested
Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.
Tested to factory specification. Backed by 25 years of enterprise trust.
This professionally tested and refurbished Cisco NIM-1GE-CU-SFP is a 1-port Gigabit Ethernet WAN Network Interface Module (NIM) designed for the Cisco 4000 Series Integrated Services Router platform. The module features a dual-mode combo port — one SFP slot and one RJ-45 copper port — providing up to 1 Gbps of WAN connectivity with the flexibility to choose between fiber-optic or copper cabling to suit your deployment environment. Every unit ships reset to factory defaults and accompanied by a Certificate of Testing.The NIM-1GE-CU-SFP operates as a routed Layer 3 port, meaning the host ISR 4000 router handles all traffic entering the module. It supports key enterprise WAN functions including Ethernet WAN (EWAN) access, inter-VLAN routing, and high-speed connectivity to LAN switches and servers. The module supports auto-switchover and auto-failover between the SFP and RJ-45 interfaces, and it is compatible with Cisco IOS XE software running on the ISR 4221, ISR 4321, ISR 4331, ISR 4351, ISR 4431, and ISR 4451-X platforms. It also supports hard Online Insertion and Removal (OIR), allowing hot-swap installation without powering down the host router. Note: PoE is not supported on this module.
Purchasing refurbished Cisco hardware through WhaleyComm delivers the same enterprise-grade performance at a fraction of new-equipment cost — backed by our Lifetime Warranty, ISO 9001-certified testing process, and 25+ years serving 5,000+ enterprise customers. The NIM-1GE-CU-SFP is an ideal, cost-efficient way to add a dedicated WAN GE port to an existing ISR 4000 deployment.
Technical Specifications
Product Number
NIM-1GE-CU-SFP
Product Description
1-Port Gigabit Ethernet, Dual-Mode GE/SFP, Network Interface Module
Form Factor
Network Interface Module (NIM)
Number of Ports
1 (Combo: 1x SFP + 1x RJ-45 copper, one active at a time)
Port Speed
Up to 1 Gbps (Gigabit Ethernet)
Connector Types
SFP (mini-GBIC) and RJ-45 copper
Layer Support
Layer 3 routed port (Layer 2 switching between local ports not supported)
Supported Platforms
Cisco ISR 4221, ISR 4321, ISR 4331, ISR 4351, ISR 4431, ISR 4451-X (Cisco 4000 Series ISR)
Software
Cisco IOS XE
Auto-Switchover / Auto-Failover
Yes
Hot Swap (OIR)
Yes — Hard Online Insertion and Removal supported
MACsec Support (IEEE 802.1AE)
No
Power over Ethernet (PoE)
Not supported
Dimensions (H x W x D)
1.25 x 3.50 x 7.24 in. (32 x 89 x 184 mm)
Weight
240 grams
Operating Temperature
32° to 104°F (0° to 40°C)
Storage Temperature
-38° to 150°F (-40° to 70°C)
Operating Humidity
5% to 85% (non-condensing)
Relative Humidity
5% to 95%
QoS Classification
IPv4/IPv6 or 802.1Q-based input packet classification (mutually exclusive)
Condition
Refurbished — professionally tested, reset to factory defaults
Ideal Use Cases
Dedicated WAN Uplink Expansion
Add a dedicated GE WAN port to an ISR 4000 series router without consuming an onboard interface. The NIM-1GE-CU-SFP installs directly into an available NIM slot to deliver a fully routed Layer 3 WAN connection.
Branch Office WAN Connectivity
Ideal for branch offices requiring Ethernet WAN (EWAN) access over either fiber (SFP) or copper (RJ-45), giving network engineers the flexibility to match the available last-mile service at each site.
ISR 4000 Platform Upgrade
Extend the capability of existing ISR 4221, 4321, 4331, 4351, 4431, or 4451-X deployments by adding a WAN GE port without replacing the host router — a cost-effective path to increased interface density.
Dual-Media Failover Design
The module's built-in auto-switchover and auto-failover support makes it well-suited for resilient WAN designs where automatic interface failover between fiber and copper is required.
Inter-VLAN Routing at the Edge
The NIM-1GE-CU-SFP supports Layer 2 VLAN trunk termination from externally connected switches, allowing the host ISR to perform inter-VLAN routing across VLANs arriving from the WAN edge.
Lab, Testing, and Spare Inventory
At $47, this module is an economical option for network labs, staging environments, and spare-parts inventory for organizations with ISR 4000 series deployments in production.
What's Included
Cisco NIM-1GE-CU-SFP 1-Port GE/SFP WAN Network Interface Module
Certificate of testing and factory reset
WhaleyComm Lifetime Warranty certificate
Lifetime Warranty — No Time Limits. No Questions.
Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it. We have stood behind our hardware for 25 years and 5,000+ customers — that is not a marketing line, it is our operating standard.
Compatibility Details
Review supported optics, cables, software, management protocols, and environment-specific compatibility guidance.
Compatible Host Platforms (Cisco 4000 Series ISR)
✓
Cisco ISR 4221 (ISR4221/K9)
✓
Cisco ISR 4321 (ISR4321/K9)
✓
Cisco ISR 4331 (ISR4331/K9)
✓
Cisco ISR 4351 (ISR4351/K9)
✓
Cisco ISR 4431 (ISR4431/K9)
✓
Cisco ISR 4451-X (ISR4451-X/K9)
✓
Software
✓
Cisco IOS XE (multiple releases — verify minimum required version on Cisco's Ethernet WAN compatibility matrix at cisco.com)
✓
SFP Optics (SFP slot)
✓
Cisco-supported 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-T, and other Cisco-qualified SFP transceivers — verify supported SFP list via Cisco's Transceiver Compatibility Matrix or the ISR 4000 series product page at cisco.com
For compatibility verification specific to your environment, contact our engineering team: +1 214 607-4800 or sales@whaleycomm.com
Shipping & Returns
Clear fulfilment, tracking, return, warranty, and support information for enterprise hardware orders.
Shipping
Orders typically ship within 1-2 business days after payment confirmation. Tracking details are shared once the order has been dispatched.
Returns
Eligible products can be returned according to WhaleyComm's return policy. For DOA, warranty, or product-related issues, contact the support team for replacement or resolution.
Frequently Asked Questions
Product-specific answers about compatibility, testing, warranty, fulfilment, and purchase confidence.
The NIM-1GE-CU-SFP is supported on all Cisco 4000 Series ISRs with an available NIM slot, including the ISR 4221, 4321, 4331, 4351, 4431, and 4451-X. Compatibility is subject to available NIM slot density on the host platform and the installed Cisco IOS XE software version.
No — the NIM-1GE-CU-SFP is a combo port design, meaning only one interface (SFP or RJ-45) is active at a time. The module does support auto-switchover and auto-failover between the two media types, which is useful for resilient WAN designs.
No to both. The NIM-1GE-CU-SFP operates exclusively as a routed Layer 3 port — Layer 2 switching between local ports on the module is not supported. Power over Ethernet (PoE) is also not supported on this module per the Cisco datasheet.
Yes. Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it at no cost — no time limits, no questions asked.
Every unit goes through our ISO 9001-certified testing process: full power-on diagnostics, port-by-port functionality testing, firmware verification, factory reset, and final inspection. A Certificate of Testing ships with every unit.
Cisco NIM-1GE-CU-SFP Refurbished — 1-Port GE/SFP WAN NIM Module
$47.00
Cisco
Cisco NIM-1GE-CU-SFP Refurbished — 1-Port GE/SFP WAN NIM Module
MPN: NIM-1GE-CU-SFP
$47.00
In Stock — Ships Same Day
