Product Summary
Cisco ISR4331-V/K9 is a high-performance branch router from the 4000 Series Integrated Services Routers. This rack-mountable network device delivers enterprise-grade routing, security, and WAN connectivity with embedded services and virtualization support. Ideal for medium-sized businesses and branch offices requiring advanced features.
Product Details
The Cisco ISR4331-V/K9 router provides 200Mbps throughput with on-board security services including firewall, VPN, and intrusion prevention. It features modular expansion slots for network interface cards (NICs), dual power supply support, and Cisco IOS XE software for application hosting. Supports SD-WAN, cloud management, and hybrid WAN connectivity through T1/E1, xDSL, and fiber modules.
Key Features
Performance: Up to 200Mbps throughput with services enabled
Security Bundle: Includes firewall, IPsec VPN, and IPS
Virtualization: Cisco Application Hosting & IOx support
Modular Design: 3 NIM slots + 2 SM slots for expansion
Connectivity: 2x GE RJ45 + 2x GE SFP ports
Power Options: Dual redundant power supplies
Management: Cisco DNA Center, Cisco SD-WAN ready
QoS: Advanced traffic prioritization
WAN Support: MPLS, broadband, 4G/LTE
Product Parameters Table
| Parameter | Specification |
| Router Series | Cisco 4000 Series ISR |
| Throughput | 200 Mbps (with services) |
| CPU | Multicore processor |
| Memory | 4GB DRAM, 4GB flash |
| On-board Ports | 2x GE RJ45, 2x GE SFP |
| Expansion Slots | 3 NIM slots, 2 SM slots |
| Power Supplies | 1+1 redundancy support |
| Encryption | Hardware-accelerated IPsec VPN |
| OS | Cisco IOS XE |
| Dimensions | 1RU rack-mountable |
Similar Models Comparison Table
| Model | Throughput | Ports | Expansion | Key Applications |
| ISR4331-V/K9 | 200 Mbps | 2xGE+2xSFP | 3 NIM | Mid-size branch security |
| ISR4321-V/K9 | 100 Mbps | 2xGE+2xSFP | 2 NIM | Small branch offices |
| ISR4351-V/K9 | 500 Mbps | 4xGE+2xSFP | 4 NIM | Large branches |
| ASR1001-HX | 20 Gbps | Modular | 10+ slots | Enterprise edge |
