Cisco PWR-4450-AC 450WATT Power Supply
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PWR-4450-AC Cisco ISR4451 Power Supply 450 WATT AC Refurbished

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Part Number#: PWR-4450-AC
List Price was: $474.42
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Short Description:
PWR-4450-AC ISR4451 450 WATT AC Input Voltage Alternating Current (AC) 100/240 V Frequency Required 47/63 Hz Internal Power Supply | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Product Overview of the Cisco Power Supply

The Cisco PWR-4450-AC is an internal power supply specifically tailored for the ISR4451 series routers. With a power rating of 450 Watts and an AC input voltage range of 100-240 Volts, this power supply ensures stable and efficient power delivery to the routers.

Understanding Internal Power Supplies and Their Role

Internal power supplies are critical components within networking devices, responsible for converting external electrical power into the required voltage and current for the device's operation. In the context of the PWR-4450-AC, it plays a vital role in providing the necessary power to ISR4451 routers, ensuring their functionality.

Features of Cisco PWR-4450-AC Power Supply

450 Watt Power Rating

The power supply is rated at 450 Watts, providing sufficient power to support the operational requirements of ISR4451 routers.

AC Input Voltage (100/240V)

It accepts a wide range of AC input voltages, from 100 to 240 Volts, allowing for flexibility in deployment across regions with varying electrical standards.

Frequency Required (47/63 Hz)

The power supply is designed to accommodate frequencies ranging from 47 to 63 Hertz, ensuring compatibility with different power grids.

Importance of Power Supplies in Networking Devices

Power supplies are crucial for networking devices for several reasons:

Reliable Operation

They provide a consistent and stable power source, ensuring the continuous operation of networking equipment.

Protection from Electrical Issues

Power supplies often include protection mechanisms against power surges and fluctuations, safeguarding devices from electrical damage.

Efficiency and Optimization

Efficient power supplies minimize energy waste, contributing to more environmentally friendly and cost-effective operations.

Benefits of Using Cisco PWR-4450-AC Power Supply

Reliable Power Delivery

The PWR-4450-AC ensures reliable power delivery, reducing the risk of device malfunction due to power-related issues.

Flexibility in Deployment

Its wide input voltage range allows for deployment in various regions with different electrical standards without requiring additional adapters.

Compatibility and Efficiency

The power supply is designed specifically for ISR4451 routers, ensuring compatibility and optimized performance.

Use Cases for Cisco PWR-4450-AC Power Supply

Enterprise Networks

Suitable for enterprise-level networks utilizing ISR4451 routers as their backbone, ensuring reliable power for critical operations.

Regional Deployments

With its broad voltage compatibility, the power supply is ideal for deployments across different regions with varying electrical standards.

Data Centers

In data center environments utilizing ISR4451 routers, the PWR-4450-AC provides stable power to support essential networking functions.

High-Performance for Network PSU

The PWR-4450-AC is a Cisco ISR4 451 Power Supply that provides 450 watts of AC power for the Cisco ISR4 451 routers. It is designed for high-performance applications, and its features include:

  • High Power Output: The 450 watts of power output enables the router to support high-performance applications and services such as VPNs, video, and other high-bandwidth services.
  • Compatibility: The power supply is specifically designed for the Cisco ISR4 451 router, ensuring compatibility and proper operation.
  • Hot-swappable: The power supply is hot-swappable, meaning that it can be replaced without having to power down the router, this helps reduce downtime and maintenance.
  • Energy Efficiency: The Power supply is designed to be energy efficient, it helps to reduce the power consumption of the router, and it also helps to reduce the operating costs
  • Redundancy: The power supply can be used in conjunction with a second power supply to provide redundant power to the router, this helps ensure that the router continues to operate even if one power supply fails.

Benefits and Features

The PWR-4450-AC is a Cisco ISR4 451 450-watt AC power supply. It provides power to a Cisco ISR4 451 router. Some benefits of this product include:

  • High power output: The 450-watt output allows the router to support more power-intensive features and modules, such as wireless and security.
  • Hot-swappable: The power supply can be replaced without having to power down the router, minimizing downtime.
  • Wide input voltage range: The power supply can accept a wide range of input voltages, allowing it to be used in different regions and environments.

Some features of this product include:

  • AC input voltage range: 100 to 240 VAC
  • Frequency: 50/60Hz
  • Efficiency: 90% at full load
  • Operating temperature range: 32 to 104°F (0 to 40°C)

It's a high-power output AC supply that is hot-swappable, which means you can replace the power supply without having to power down the router and it's wide input voltage range allows it to be used in different regions and environments.


The PWR-4450-AC Cisco ISR4 451 450 WATT AC Power Supply is designed for high reliability, which means that it is built to withstand a wide range of environmental conditions and operate reliably over an extended period. Some specific features and design elements that contribute to the high reliability of this product include:

  • High efficiency: With an efficiency rating of 90% at full load, the power supply can convert a high percentage of the input power into usable power for the router, which helps to reduce heat generation and increase overall reliability.
  • Wide operating temperature range: The power supply is designed to operate in temperatures ranging from 32 to 104°F (0 to 40°C), which allows it to be used in a wide range of environments and conditions.
  • Over-current and over-voltage protection: The power supply is designed with built-in over-current and over-voltage protection, which helps to prevent damage to the router and power supply in the event of a power surge or other electrical anomaly.

The hot-swappable feature also helps with high reliability, as this allows for easy replacement of a failed power supply without disrupting router operations.

Main Information about this Cisco PWR-4450-AC

Power Description

  • 450 Watt Network PSU
  • Input Voltage Type AC
  • Input Voltage 110 V AC
  • Input Voltage 220 V AC


  • Compatibility: Cisco 4451-X Integrated Services Router

In summary, the Cisco PWR-4450-AC Power Supply, with its 450-watt power rating, wide AC input voltage range (100-240V), and compatibility with ISR4451 series routers, serves as a crucial component in networking infrastructure. Its role in providing reliable power, flexibility in deployment, and compatibility with different electrical standards makes it a significant element in enterprise networks, regional deployments, and data center environments. Cisco's commitment to delivering compatible and efficient power solutions positions the PWR-4450-AC as a reliable choice for powering ISR4451 routers across diverse networking environments.

Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

Here, you can check more available conditions of your desired product PWR-4450-AC at a competitive price. We are trying our best to meet your needs on the enterprise-level computer, server, data centre, and networking hardware. You are welcome to ask our live chat or get live representative support over the phone.


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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
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