NETWORK-431-SR-K9 - Cisco Used Firepower 2100 Series Overview
NETWORK-431-SR-K9 - Cisco Used Firepower 2100 Series is a genuine modular capacity expansion product from Cisco, a leading enterprise networking vendor whose Catalyst, Nexus and ISR families power campus, data-center and branch networks worldwide. Belonging to the Cisco Used Firepower 2100 Series family, the NETWORK-431-SR-K9 unit is built to the original factory specification, so it integrates with existing Cisco deployments predictably and behaves exactly as the platform documentation describes. In the network, it is installed into a compatible chassis slot, where it works alongside the supervisor and line cards to extend the platform’s capabilities.
This unit follows the original factory specification for the Cisco Used Firepower 2100 Series family, covering its intended role without compatibility surprises. Standard mounting, cabling and management practices apply, and it interoperates with surrounding hardware using the same procedures as other Cisco equipment already deployed in the network.
Typical deployments include perimeter protection with stateful inspection, branch-office security with VPN and threat prevention, and data-center north-south traffic filtering. Organizations commonly source it for refresh programs, capacity expansion and spares management, keeping a tested unit on hand so outages stay short and replacements are predictable. The factory detail for this unit reads: “Prime Network 4.3.1 - Service and Minor Upgrade”. This makes it a practical choice when original-spec hardware is required at a predictable cost.
Every unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation, including port status, console access and firmware state. Our warranty coverage and responsive technical support protect the purchase after it arrives, and our team can confirm revision levels and software compatibility before you order. For volume requirements we also offer configuration checks and staged delivery options.
Contact our sales team for current availability, lead time and shipping options for the NETWORK-431-SR-K9. We respond quickly with stock status and a firm quote, so you can plan the refresh or expansion with confidence.
Key Specifications
Applications
Capacity Expansion
Add ports and performance to existing chassis.
Upgrade Path
Modernize aging platforms with compatible modules.
Flexible I/O
Mix copper, fiber and high-speed uplinks.
Buying a Pre-Owned NETWORK-431-SR-K9
Verify the unit is tested, firmware confirmed, and condition documented. Every unit is fully tested and warranty covered. Contact our team for current stock and availability.
NETWORK-431-SR-K9 Specifications | |
| Brand | Cisco |
| Model | NETWORK-431-SR-K9 |
| Product Name | Prime Network 4.3.1 |
| Upgrade Type | Service and Minor Upgrade |
| Software Version | 4.3.1 |
| License Type | Perpetual |
| Supported Platforms | Linux, Windows |
| Compatibility | Cisco Network Devices |
| Security Features | High |
| Network Management Type | Enterprise |
| Upgrade Frequency | Minor Upgrades |
| Support | 24/7 Cisco Support |
| Documentation | Online and Technical Manuals |
| User Management | Multi-User Support |
| Database Support | Oracle, MySQL |
| Logging and Monitoring | Advanced |
| Backup and Recovery | Supported |
| API Integration | RESTful APIs |
| Network Visualization | Graphical Interface Available |
| Configuration Management | Automated |
NETWORK-431-SR-K9 - Product Notes
This listing is a specific SKU variant of the NETWORK-431-SR-K9 family. Review the specifications above and confirm compatibility with your existing infrastructure, including software version, mounting, and interface requirements, before ordering.
For volume requirements we offer configuration checks and staged delivery options. Our team can confirm revision levels, software compatibility, and lead time before you place an order.
Every unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation.
NETWORK-431-SR-K9 - Cisco Series Notes
This listing is part of the Cisco enterprise networking product family, sourced and tested by LinkNewNet for enterprise deployment. Cisco firewall provides stateful inspection, VPN termination, and threat defense at the network perimeter. It is commonly deployed in internet-edge, site-to-site, and remote-access roles.
Deployment guidance: When planning this NETWORK-431-SR-K9 unit into a network, confirm the software image (IOS/IOS-XE/NX-OS) required, the power and cooling profile, and the upstream/downstream interface types that match your existing infrastructure. For a like-for-like refresh, match the feature set of the units already in service so management and automation behave consistently.
Our Cisco reconditioning process: Every pre-owned Cisco unit at LinkNewNet passes a documented reconditioning flow before dispatch - visual inspection, internal cleaning, firmware verification, port-by-port testing, and configuration reset to factory defaults. This ensures the unit you receive operates reliably and integrates cleanly with your existing Cisco management tools.
Related models in this family: FPR-2110-ASA-K9, FPR2140-NGFW-K9, FPR2130-NGFW-K9, FPR2130-FTD-HA-BUN, FPR2130-ASA-K9. Compare specifications to confirm the right port density, feature set and uplink options for your deployment.
Model code: K9 = Cryptographic (encryption) software feature set - this suffix indicates the feature set, power, or regulatory variant of the NETWORK-431-SR-K9, which affects software licensing and regional compliance.
