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REFURBISHED
Cisco
Cisco NIM-16A Refurbished - 16-Port Async Serial NIM for ISR 4000
MPN: NIM-16A
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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.
Professionally tested and reset to factory defaults. Backed by 25 years of enterprise trust.
This refurbished Cisco NIM-16A is a 16-port asynchronous serial Network Interface Module designed for the Cisco ISR 4000 Series. Professionally tested and reset to factory defaults, this module gives enterprise network teams a cost-effective path to expanding terminal server capacity on their existing ISR 4000 infrastructure without compromising reliability or performance.The NIM-16A plugs directly into any NIM slot on all Cisco 4000 Series ISR platforms and enables the router to function as a terminal server, providing out-of-band console access to remote network and server devices across a LAN or WAN. The module supports RS-232 asynchronous serial interfaces and connects to downstream devices via standard Octal cables (CAB-HD8-ASYNC or CAB-ASYNC-8). Cisco IOS Software automatically creates the async interfaces upon module insertion, and the recommended connection rate is 9600 baud, with higher rates supported for low simultaneous connection counts.
This refurbished NIM-16A represents significant savings versus new list pricing while delivering identical functionality. WhaleyComm's ISO 9001-certified testing process ensures every unit ships ready to deploy. Whether you are centralizing out-of-band management for a branch office or expanding an existing terminal server deployment, the NIM-16A delivers proven Cisco performance at a fraction of the cost.
Technical Specifications
Product Type
16-Port Asynchronous Serial Network Interface Module (NIM)
MPN
NIM-16A
Interface Type
RS-232 Asynchronous Serial
Number of Ports
16
Form Factor
Single-wide NIM (plug-in module)
Host Slot Type
NIM slot
Compatible Platforms
Cisco ISR 4221, 4321, 4331, 4351, 4431, 4451 (all 4000 Series ISR platforms with NIM slots)
Cable Sockets
2 (upper and lower)
Supported Cables
CAB-HD8-ASYNC, CAB-ASYNC-8
Recommended Baud Rate
9600 bps
Primary Use
Terminal server / out-of-band console management
Software
Cisco IOS Software (auto-creates async interfaces on insertion)
SLIP/PPP Support
Not supported
Front Panel LEDs
3
Ideal Use Cases
Out-of-Band Network Management
Deploy the NIM-16A to give network operators centralized console access to up to 16 remote devices simultaneously, eliminating the need for dedicated console servers or local physical access during outages.
Terminal Server Consolidation
Consolidate multiple legacy terminal server appliances into a single ISR 4000 router by leveraging the NIM-16A, reducing rack space, power draw, and management overhead across branch or data center environments.
Branch Office Console Access
Enable branch office IT staff to manage routers, switches, and servers remotely via centralized console sessions, reducing mean time to repair and minimizing costly truck rolls.
ISR 4000 Capacity Expansion
Scale an existing Cisco ISR 4000 deployment by adding asynchronous serial capacity in a single-wide NIM slot, with the number of modules limited only by available NIM slots on the host platform.
Legacy Serial Device Integration
Connect RS-232 serial devices — including older network equipment, industrial controllers, and legacy servers — to modern ISR 4000 infrastructure for centralized management without replacing end-of-life hardware.
What's Included
Cisco NIM-16A 16-Port Async Serial NIM module
Certificate of Testing
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 PLATFORMS
✓
The Cisco NIM-16A is supported in the NIM slots of all Cisco 4000 Series ISR platforms: ISR 4221, 4321, 4331, 4351, 4431, and 4451.
✓
The number of NIM-16A modules per platform is governed only by the number of available NIM slots.
✓
The NIM-16A can also be used with the SM-X-NIM-ADPTR adapter on platforms that support SM-X slots (one 16-port module per adapter; ISR 4331 supports one adapter, ISR 4351 and 4451 support two adapters).
COMPATIBLE OPTICS & CABLES
✓
Compatible cables: CAB-HD8-ASYNC and CAB-ASYNC-8.
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-16A is supported in the NIM slots of all Cisco 4000 Series ISR platforms, including the ISR 4221, 4321, 4331, 4351, 4431, and 4451. The number of modules you can install is limited only by the number of available NIM slots on your host platform.
The NIM-16A uses standard Octal cables — specifically CAB-HD8-ASYNC (the previous-generation cable) or the newer CAB-ASYNC-8. Both cable types are compatible with both sockets on the NIM-16A. Octal cables fan out from a single high-density connector into eight individual RJ-45 connectors, providing connectivity for up to eight devices per cable.
No. The NIM-16A is specifically designed for terminal server use only. Cisco IOS Software does not support SLIP or PPP on this module, and asynchronous routing and data encapsulation features are not available. It is purpose-built for out-of-band console management.
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-16A Refurbished - 16-Port Async Serial NIM for ISR 4000
$199.00
Cisco
Cisco NIM-16A Refurbished - 16-Port Async Serial NIM for ISR 4000
MPN: NIM-16A
$199.00
In Stock — Ships Same Day
