Cisco
Cisco ISR4351/K9 Router
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Cisco ISR 4351 Router Condition: Refurbished / Used Type: Integrated Services Router (ISR 4000 Series) WAN Ports: 3 × NIM slots, 2 × SM slots, 2 × SFP + 1 × RJ-45 combo Performance: Up to 200 Mbps default throughput (upgradeable) Voice & Video: Digital
Cisco ISR4351/K9 Integrated Services Router
✅ Cisco ISR4351/K9 Router Overview
The Cisco ISR4351/K9 is a 2U rack-mount, enterprise-grade router from the Cisco 4000 Series — purpose-built for mid-sized to large branch and campus networks. With throughput scalable from 200 Mbps to 400 Mbps, it supports advanced services such as SD-WAN, unified communications, VPN, and application optimization. The router includes intelligent performance licensing and modular expansion to adapt to growing network demands.cisco.comrouter-switch.com
🌟 Cisco ISR4351/K9 Router Key Features
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Scalable Performance: Base throughput of ~200 Mbps, upgradable to ~400 Mbps with performance license
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Interface Options: 3 x onboard Gigabit Ethernet ports, plus 3 x SFP ports for fiber or wired uplinks
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Modular Expansion: 3 NIM slots, 2 Enhanced Service Module (SM-X) slots, and 1 ISC slot
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Memory & Storage: 4 GB DRAM and 4 GB flash (both upgradeable up to 16 GB)
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Hardware Encryption & VPN: Supports IPSec, SSL VPN, NAT, and advanced security features
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Routing & Service Support: Full support for dynamic routing protocols (OSPF, BGP, RIP, EIGRP), VLANs, QoS, NetFlow, and traffic monitoring
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Management Ports: Includes console (RJ‑45), mini-USB, auxiliary port, USB-A ports, and dedicated management RJ‑45
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Platform Reliability: Cisco IOS XE software, optional PoE support, and enterprise-class packaging
📊 Cisco ISR4351/K9 Router Technical Specifications
| Specification | Details |
|---|---|
| Model | Cisco ISR4351/K9 |
| Form Factor | 2U Rack-Mountable |
| Aggregate Throughput | 200–400 Mbps (performance license enabled) |
| Onboard Gigabit Ethernet Ports | 3 (RJ‑45) |
| Onboard SFP Ports | 3 |
| NIM Slots | 3 |
| SM‑X Slots | 2 |
| ISC Slot | 1 |
| Default DRAM | 4 GB (upgradable to 16 GB ECC DDR3) |
| Default Flash Memory | 4 GB (upgradable to 16 GB) |
| Routing & Services | OSPF, BGP, RIP, EIGRP, QoS, NetFlow, VLAN, ACLs |
| VPN & Security | IPSec, SSL, NAT, Firewall, SSL VPN |
| Management Interfaces | Console RJ-45, Mini‑USB, AUX RJ‑45, USB-A, Mgmt RJ‑45 |
| Power Options | Internal AC; optional PoE module |
| Typical / Maximum Power | 48 W typical; up to ~250 W with modules |
| Dimensions (H × W × D) | ~2 RU; approx. 43.9 × 438 × 507 mm |
| Weight | ~13.1 kg (28.9 lbs) |
| Operating Temp / Humidity | 0–40 °C; 5–85% non-condensing |
| Warranty | 90-day limited liability warranty |
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