| Model Number: |
| Cisco ISR 4321 router(2GE,2NIM,4G FLASH,4G DRAM,IP Base) |
| Detail: |
| 50Mbps-100Mbps system throughput, 2 WAN/LAN ports, 1 SFP port, multi-Core CPU,2 NIM, Security, Voice, WAAS, Intelligent WAN, OnePK, AVC |
ISR4321/K9 Overview
Specifications of Cisco 4000 Series Integrated Services Routers
| Technical Specifications | Cisco 4451 | Cisco 4431 | Cisco 4351 | Cisco 4331 | Cisco 4321 | Cisco 4221 |
| SFP-based ports | 4 | 4 | 3 | 2 | 1 | 1 |
| Enhanced service-module slots | 2 | 0 | 2 | 1 | 0 | 0 |
| NIM slots | 3 | 3 | 3 | 2 | 2 | 2 |
| OIR (all I/O modules) | Yes | Yes | Yes | Yes | Yes | No |
| Onboard ISC slot | 1 | 1 | 1 | 1 | 1 | No |
| Default memory DDR3 ECC DRAM (data plane) | 2 GB | 2 GB | NA | NA | NA | NA |
| Maximum memory DDR3 ECC DRAM (data plane) | 2 GB | 2 GB | NA | NA | NA | NA |
