⁸ Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR43 – Let's Fibre Technologies
Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash
Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash
Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash
Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash
Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash
Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash
Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash
Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash
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Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash

R 59,749.81
R 59,749.81
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Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash

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Description

Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash

Cisco 4331 Integrated Services Router delivers 100 Mbps to 300 Mbps aggregate throughput and offers one Enhanced service-module (SM-X) slot, which supports for both single- and double-wide service modules provides flexibility in deployment options.

Specs Summary

Product Code

Cisco ISR4331/K9

Aggregate Throughput

100 Mbps to 300 Mbps

Total onboard WAN or LAN 10/100/1000 ports

3

RJ-45-based ports

2

SFP-based ports

2

Enhanced service-module (SM-X) slot

1

NIM (Network Interface Modules) slots

2

Onboard ISC slot

1

Memory

4 GB (default) / 16 GB (maximum)

Flash Memory

4 GB (default) / 16 GB (maximum)

Power-supply options

Internal: AC and PoE

Rack height

1 RU

Dimensions (H x W x D)

44.45 x 438.15 x 438.15 mm

Package Weight

12.96 Kg


 


Compare to Similar Items

Technical Specifications

ISR4461/K9

ISR4451-X/K9

ISR4431/K9

ISR4351/K9

ISR4331/K9

ISR4321/K9

ISR4221/K9

Aggregate Throughput

1.5Gbps

1 Gbps to

2 Gbps

500 Mbps to

1 Gbps

200 Mbps to

400 Mbps

100 Mbps to

300 Mbps

50 Mbps to

100 Mbps

35 Mbps to 75 Mbps

Total onboard WAN or LAN 10/100/1000 ports

4

4

4

3

3

2

2

RJ-45-based ports

4

4

4

3

2

2

2

SFP-based ports

4

4

4

3

2

1

1

Enhanced service-module slots

3

2

0

2

1

0

0

Doublewide service-module slots

2

1 (assumes no singlewide SM-X modules installed)

0

1 (assumes no singlewide SM-X modules installed)

0

0

0

NIM slots

3

3

3

3

2

2

2

OIR (all I/O modules)

Yes

Yes

Yes

Yes

Yes

Yes

No

Onboard ISC slot

1

1

1

Technical Specifications

ISR4331/K9 Specifications
Aggregate Throughput (Default) 100 Mbps
Aggregate Throughput (Performance License) 300 Mbps
Aggregate CEF Only[5] Throughput (Boost License) Over 2Gbps
Total onboard WAN or LAN 10/100/1000 ports 3
Total onboard WAN or LAN 10Gbps ports -
RJ-45-based ports 2
SFP-based ports 2
Enhanced service-module slots 1
Doublewide service-module slots 0
NIM slots 2
OIR (all I/O modules) Yes
Onboard ISC slot 1
Default memory double-data-rate 3 (DDR3) error-correction-code (ECC) DRAM (Combined control/services/data planes) 4 GB
Maximum memory DDR3 ECC DRAM (Combined control/services/data planes) 16 GB
Default memory DDR3 ECC DRAM (data plane) NA
Maximum memory DDR3 ECC DRAM (data plane) NA
Default memory DDR3 ECC DRAM (control/services plane) NA
Maximum memory DDR3 ECC DRAM (control/services plane) NA
Default flash memory 4 GB
Maximum flash memory

16 GB
External USB 2.0 slots (type A)

1
USB console port -type B mini (up to 115.2 kbps) 1
Serial console port - RJ45 (up to 115.2 kbps) 1
Serial auxiliary port - RJ45 (up to 115.2 kbps) 1
Power-supply options Internal: AC and PoE, DC* (*4331-DC)
Redundant power supply N/A
Power Specifications
AC input voltage 100 to 240 VAC autoranging

Input Voltage

 24 – 60V
Input Current 14 - 5A

AC input frequency

 47 to 63 Hz
AC input current range, AC power supply (maximum) 3 to 1.3A
Sizes and Weights
Dimensions
(H x W x D)

1.75 x 17.25 x 17.25 in

(44.45 x 438.15 x 438.15 mm)
Rack height 1 Rack Unit (1RU)
Typical weight (fully loaded with modules) 16.1 lb (7.3 kg)
Packaging Weight

4.6 lb (2.1 kg)
Airflow

I/O side to bezel side
MTBF (Hours) 587250
Operating Conditions

Temperature

32 to 104°F

(0 to 40°C)
Altitude

0 – 6,560 ft.

(0 – 2,000 m)


The Cisco ISR4331/K9 Router (3GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base), ISR4331 with 3 onboard GE, 2NIM slot, 1ISC slot, 1SM slots, 4GB Flash is far and away, one of our most popular items. People can't seem to get enough of it.

Inventory Last Updated: Dec 01, 2025