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| Brand Name : | Cisco | 
| Model Number : | ISR4431-K9 | 
| Certification : | CE | 
Cisco 4431 Integrated Services Router, which supports 3 Network Interface Modules (NIM) slots, delivers 500 Mbps to 1 Gbps aggregate throughput. This router also supports two kinds of DDRM, data plane and control/services plane, which make administrator easy to manage the router.
Figure 1 shows the appearance of Cisco ISR4431/K9.

Table 1 shows the Quick Specs.
| Product Code | Cisco ISR4431/K9 | 
| Aggregate Throughput | 500 Mbps to 1 Gbps | 
| Total onboard WAN or LAN 10/100/1000 ports | 4 | 
| RJ-45-based ports | 4 | 
| SFP-based ports | 4 | 
| Enhanced service-module (SM-X) slot | 0 | 
| NIM (Network Interface Modules) slots | 3 | 
| Onboard ISC slot | 1 | 
| DDRM (data plane) | 2 GB (default) / 2 GB (maximum) | 
| DDRM (control/services plane) | 4 GB (default) / 16 GB (maximum) | 
| Flash Memory | 8 GB (default) / 32 GB (maximum) | 
| Power-supply options | Internal: AC, DC, and PoE | 
| Rack height | 1 RU | 
| Dimensions (H x W x D) | 43.9 x 438.15 x 507.2 mm | 
| Package Weight | 20.88 Kg | 
Figure 2 shows the front panel of Cisco ISR4431/K9.

Note:
| ① | Power supply unit | ③ | Router power On/Off switch | 
| ② | LEDs | ④ | Optional power supply unit | 
·LEDs include 12 indicators.


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