Cisco ISR 4000 Series Routers

The Cisco ISR 4000 Series delivers secure, high-performance routing and advanced network services for branch and enterprise environments. Designed for digital transformation, these integrated services routers combine WAN, security, voice, and application optimization in a single, modular platform.

  • High-speed WAN and VPN performance for branch and remote sites
  • Integrated security features including firewall, IPS, and encrypted traffic analytics
  • Modular scalability supporting LTE, voice, and SD-WAN capabilities

Choose the right Cisco ISR 4000 router—from ISR4321 and ISR4331 to ISR4451—to deliver agility, security, and consistent connectivity. Check Cisco ISR 4000 prices and datasheets, and buy with fast worldwide delivery and professional technical support.

  • ISR4221/K9ISR4221/K9

    ISR4221/K9

    Original price was: $3,827.00.Current price is: $517.00.

    router – rack-mountable

    Condition: New Factory Sealed
  • ISR4321/K9ISR4321/K9

    ISR4321/K9

    Original price was: $3,827.00.Current price is: $378.00.

    router – rack-mountable

    Condition: New Factory Sealed
  • ISR4331/K9ISR4331/K9

    ISR4331/K9

    Original price was: $3,827.00.Current price is: $463.29.

    router – rack-mountable

    Condition: New Factory Sealed
  • ISR4351/K9ISR4351/K9

    ISR4351/K9

    Original price was: $3,827.00.Current price is: $699.00.

    router – rack-mountable

    Condition: New Factory Sealed
  • ISR4431/K9ISR4431/K9

    ISR4431/K9

    Original price was: $7,489.00.Current price is: $2,105.85.

    router – rack-mountable

    Condition: New Factory Sealed
  • ISR4451-X/K9ISR4451-X/K9

    ISR4451-X/K9

    Original price was: $7,489.00.Current price is: $2,454.03.

    router – rack-mountable

    Condition: New Factory Sealed
  • ISR4461/K9ISR4461/K9

    ISR4461/K9

    Original price was: $24,921.00.Current price is: $7,706.05.

    router – rack-mountable

    Condition: New Factory Sealed