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by Cisco
Product Line: Cisco 2900 Series
Product Type: Integrated Services Router
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Original price $0.00 - Original price $0.00
Original price
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Title: Surplus

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Product Description

The CISCO2921-SEC/K9 features 3 integrated 10/100/1000 Ethernet ports and multiple expansion options including 2 service module slots, 1 Internal Service Module slot, 3 onboard digital signal processor slots, and 4 Enhanced high-speed WAN interface card (EHWIC) slots. Designed for versatility, it supports a wide range of power-supply options such as AC, PoE, and DC, with AC input voltage ranging from 100 to 240 VAC auto-ranging and a DC input voltage of 24 to 60 Vdc, autoranging positive or negative. With dimensions of 47 cm (W) x 43.8 cm (D) x 8.9 cm (H) and a weight of 13.2 kg, this modular 2U form factor router is designed for efficient space utilization and easy integration into rack environments.

FAQs for the CISCO2921-SEC/K9

  • What are the integrated Ethernet port specifications?
    There are 3 integrated 10/100/1000 Ethernet ports (RJ-45 only).
  • How many service module slots does the device offer?
    The device features 2 service module slots, 1 Internal Service Module slot, 3 onboard digital signal processor slots, and 4 Enhanced high-speed WAN interface card (EHWIC) slots.
  • What is the form factor and dimensions of the hardware?
    The hardware has an external, modular form factor, measuring 47 cm in width, 43.8 cm in depth, and 8.9 cm in height.
  • How much does the hardware weigh?
    With an AC Power Supply and no modules, the hardware weighs 13.2 kg (29 lb).
  • What power supply options are available?
    Power supply options include AC, Power over Ethernet (PoE), and DC.
  • Is there support for redundant power supply (RPS)?
    Yes, there is support for an external Cisco RPS 2300.
  • What are the AC input power specifications?
    AC input voltage auto ranges from 100 to 240 VAC, with a frequency of 47 to 63 Hz. The maximum AC input current range is 3.4 to 1.4A, with a surge current of <50A.
  • What is the maximum power consumption with an AC power supply?
    The maximum power consumption with an AC power supply is 320 Watts.
  • What is the operating temperature range?
    The operating temperature range is from 32 to 104ºF (0 to 40ºC), up to a maximum altitude of 5,906 feet (1,800m).
  • How does the DC input voltage range, and what are the current requirements?
    The DC input voltage ranges from 24 to 60 Vdc, autoranging positive or negative. The maximum DC input current is 12A at 24V and 5A at 60V.

Product Review

The Cisco CISCO2921-SEC/K9 offers versatile connectivity with three integrated Gigabit Ethernet ports, four Enhanced High-Speed WAN Interface Card slots, and comprehensive expansion options including two service module slots and one internal service module slot. However, its substantial size (2U rack height) and weight (13.2 kg without modules) may pose installation challenges in space-constrained environments. The device supports a wide range of power supply options, including AC, PoE, and DC, catering to diverse deployment scenarios, but its power consumption, peaking at 320 watts with AC power, requires careful consideration in power management planning.


The Cisco CISCO2921-SEC/K9 is a high-performance, modular networking device designed to provide secure and reliable service integration. Tailored for scalability, it caters to a broad spectrum of infrastructure requirements. This model comes equipped with three integrated 10/100/1000 Ethernet ports, exclusively RJ-45, enabling high-speed connectivity and efficient network operations. Key hardware specifications include: - Two service module slots, providing flexibility for expansion. - One Internal Service Module (ISM) slot, enhancing the device's functionality. - Three onboard digital signal processor (DSP) slots, supporting advanced multimedia applications. - Four Enhanced High-Speed WAN Interface Card (EHWIC) slots, allowing for increased bandwidth and interface options. The device's form factor is external and modular, occupying a 2U rack space, making it suitable for rack-mounted installations. It measures 47 cm in width, 43.8 cm in depth, and 8.9 cm in height, with a weight of 13.2 kg. This makes it a compact yet powerful solution for networking needs. Power-wise, the CISCO2921-SEC/K9 supports AC 120/230 V (50/60 Hz) input, with various power supply options including AC, Power over Ethernet (PoE), and DC. It is compatible with the Cisco RPS 2300 for external redundant power supply support. The device's power specifications ensure operational efficiency and resilience, with a typical power consumption of 60 watts and a maximum power capacity of 320 watts with an AC power supply. When equipped with a PoE power supply, the platform's power capacity increases to 370 watts, with a maximum end-point PoE power availability of 280 watts. The PoE capacity can be boosted to 750 watts for intensive power demands. For DC input, the device supports a voltage range of 24 to 60 Vdc, auto-ranging and compatible with both positive and negative inputs. This flexibility ensures that the device can operate in a variety of power environments, with a maximum DC input current of 12A at 24V and 5A at 60V. The Cisco CISCO2921-SEC/K9 is designed to operate within a temperature range of 32 to 104ºF (0 to 40ºC), suitable for most standard office and data center environments. Its operational altitude limit is 5,906 feet (1,800m), ensuring reliable performance even in elevated locations. In summary, the Cisco CISCO2921-SEC/K9 is engineered for businesses seeking a scalable, secure, and efficient networking solution. Its comprehensive set of features and hardware specifications make it an ideal choice for supporting complex network architectures and applications.


Product Number and ManufacturerCISCO2921-SEC/K9 by Cisco
Network InterfacesThree built-in 10/100/1000 Ethernet connections (RJ-45 only)
Expansion SlotsTwo service modules, one Internal Service Module, three DSP slots, four EHWIC slots
Chassis TypeExternal, modular, 2U size
Width47 cm
Depth43.8 cm
Height8.9 cm
Unit Weight13.2 kilograms
Electrical InputAC 120/230 V (50/60 Hz)
Power OptionsAC, PoE, DC
Compatible RPSCisco RPS 2300
Voltage Input (AC)100 to 240 VAC, auto-sensing
Frequency Input (AC)47 to 63 Hz
Current Input Range (AC)3.4 to 1.4 A
Surge Current (AC)Less than 50 A
Standard Power Consumption60 Watts
Max Power with AC Supply320 Watts
Max Power with PoE Supply370 Watts
Max PoE Power (End-Point, AC Supply)280 Watts
Max PoE Power with Boost750 Watts
DC Voltage Input24 to 60 Vdc, auto-ranging, positive or negative
DC Current InputMax 12A (24V), 5A (60V)
Enclosure Size2RU
Weight with AC Supply29 lb (13.2 kg)
Weight with PoE AC Supply30 lb (13.6 kg)
Operational EnvironmentUp to 5,906 feet (1,800m) altitude; 32 to 104ºF (0 to 40ºC) temperature range

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