ISR4321/K9

Aggregate Throughput (Default)

50 Mbps

Aggregate Throughput (Performance License)

100 Mbps

Aggregate CEF Only Throughput (Boost License)

1.5Gbps

Total onboard WAN or LAN 10/100/1000 ports

2

Total onboard WAN or LAN 10Gbps ports

-

RJ-45-based ports

2

SFP-based ports

1

Enhanced service-module slots

0

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)

8 GB

Default flash memory

4 GB

Maximum flash memory

8 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

External: AC and PoE

Sizes and Weights

Dimensions
(H x W x D)

1.75 x 14.55 x 11.60 in

(44.55 x 369.57 x 294.64 mm)

External Power Supply Dimensions
(H x W x D)

2.95 x 1.18 x 6.10 in

(75 x 30 x 155 mm)

Shipping Box Dimensions
(H x W x D)

7.0 x 21.5 x 16.125 in

(177.8 x 546.1 x 409.6 mm)

Rack height

1 Rack Unit (1RU)

Wall-mount

Mounting holes under chassis

Packaging Weight

2.2 lb (1 kg)

Airflow

Right I/O side to Left I/O side

MTBF (Hours)

593270

Environmental Specifications

Temperature

32 to 104°F

(0 to 40°C)

Altitude

(China)

0 – 6,560 ft.

(0 – 2,000 m)

Altitude

(Rest of the world)

0 – 10,000 ft.

(0 – 3,050 m)

Relative humidity

5% to 85%

Short-term humidity

5% to 90%, not to exceed 0.024 kg water/kg of dry air

Acoustics:

Sound pressure
(Typical/
maximum)

24.2/51.9 dBA

Acoustics:
Sound power (Typical/
maximum)

31.9/59.9 dBA