Cisco ISR4351/K9 4000 Series Integrated Services Router

CISCO Part #/MPN: ISR4351-K9

DiscTech Item #: CIS-ISR4351-K9-BN-FW

  • Special Order - Call for Lead Time
    Special Order - Call for Lead Time

    This item has a variable lead time for fulfilment. Please call us to discuss. Your credit card will be authorized in full on the day of ordering; it will not be charged until the day of shipment.


Interface Types: USB 2.0, Ethernet RJ45, SFP

Electrical Interface: Ethernet Gigabit - 1Gbps

On-Board Cache: 4GB

Bays/Ports/Slots: 3

U Height: 2U

Wattage/VA: 250W

Voltage: 110-240V Multi

Cisco ISR4351/K9 4000 Series Integrated Services Router 3GE, 3NIM Slots, 2SM, 4G FLASH, 4G DRAM - Brand New

Cisco ISR4351/K9 4000 Series Integrated Services Router 3GE, 3NIM Slots, 2SM, 4G FLASH, 4G DRAM - Brand New

Product Overview:

The Cisco 4000 Family Integrated Services Router (ISR) revolutionizes WAN communications in the enterprise branch. With new levels of built-in intelligent network capabilities and convergence, it specifically addresses the growing need for appliCisco CISCO1921/K9 Integrated Service Routercation-aware networking in distributed enterprise sites. These locations tend to have lean IT resources. But they often also have a growing need for direct communication with both private data centers and public clouds across diverse links, including Multiprotocol Label Switching (MPLS) VPNs and the Internet.

Cisco Manufacturer Limited 90-days warranty

Cisco 1921 Integrated Service Routers
Model NumberISR4351/K9

Aggregate Throughput (Optional license may be required for advanced performance)
  • Default - 200Mbps
  • W/ Performance License - 400Mbps
  • W/ Boost License - Over 2Gbps
RJ-45 onboad LAN/WAN 10/100/1000 ports3
NIM slots3
Doublewide service module slots
1 (assumes no singlewide SM-X modules installed)
SFP-Based Ports
Memory (DDR3 ECC DRAM): Default/Maximum - (Combined control/services/data planes)
4GB / 16GB
Default memory DDR3 ECC DRAM (data plane)NA
External USB 2.0 Slots (Type A)2
USB console (mini-Type B)(up to 115.2 kbps)1
Serial console (up to 115.2 kbps)1
Serial auxiliary port (up to 115.2 kbps) 1
Serial Aux port - RJ45 (up to 115.2 kbps)
Power-supply optionsInternal: AC, DC and PoE
Redundant-power-supply supportN/A
Power Specification
AC input voltage100-240V
AC input frequency47-63 Hz
AC input current range AC power suppy (maximum) (amps)7.1 - 3.0A
AC input surge current (maximum)
60 A peak and less than 12 Arms per half cycle
Typical power (no module48W
Maximum power capacity with AC power supply250W
Maximum power capacity with PoE power supply (platform only)990W
Maximum PoE device power capacity with PoE power supply80W
Physical Specification
Box Dimensions (H x W x D)9.75 x 22.25 x 26 in  (24.76 x 56.51 x 66.04 mm)
Rack height2 rack unit (2RU)
Rack-mount 19 in. (48.3 cm) EIAIncluded
Wall-mount (refer to installation guide for approved orientation)No
Weight: With 450W AC power supply (no modules)28.8 lb (13.1 kg)
Weight: With 1 1,000-WAC power supply+ 1 PoE power module (no other modules)29.0 lb (13.2 kg)
AirflwBack to sides

Click here to view the manufacturer's item description/brochure

ROHS Compliant

Alternate MPNs: ISR4351/K9

Weight: 12.5 lb

Warranty: Factory Warranty

Brand New

Condition Levels Explained

The product is brand new.

Factory Warranty Warranty