Juniper JPSU-920-AC-AFO 920W Power Supply
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JPSU-920-AC-AFO Juniper EX3400 920W AC PS Front To Backpwr New

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Part Number#: JPSU-920-AC-AFO
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Short Description:
JPSU-920-AC-AFO EX3400 920W Alternating Current (AC) Power Supply (PS) Front To Backpwr Airflow Cord | Made by Juniper | Brand New 3 Years Warranty
Juniper Networks
Brand Warranty:
3 Years from the Manufacturer
Product Condition:
New Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

Product Overview of the Juniper JPSU-920-AC-AFO 920W AC Airflow Cord

The Juniper EX3400 series is a family of compact, high-performance Ethernet switches designed to meet the demands of modern networks. These switches offer a range of features such as high port density, advanced security, and support for various network protocols, making them suitable for small to medium-sized businesses, data centers, and enterprise environments. The Juniper JPSU-920-AC-AFO EX3400 920W AC Power Supply is a power supply unit (PSU) designed specifically for Juniper Networks EX3400 Ethernet switches. This power supply unit delivers an output power of 920 watts and is designed to offer alternating current (AC) power to the switch.

Key Features

  • 920W AC Power Supply: The JPSU-920-AC-AFO offers a power output of 920 watts, making it suitable for powering the demanding requirements of networking equipment.
  • Compatibility: This power supply unit is fully compatible with Juniper's EX3400 series switches, ensuring seamless integration into the network infrastructure.
  • Hot-Swappable: The JPSU-920-AC-AFO is hot-swappable, which means it can be replaced or upgraded without disrupting the operation of the connected equipment, thus minimizing downtime.
  • Front-to-Back Airflow Cord: The power supply unit features a front-to-back airflow cord design, which is crucial for ensuring efficient cooling and preventing overheating.
  • Reliability: Juniper is known for producing high-quality networking equipment, and the JPSU-920-AC-AFO is no exception. It is designed to be highly reliable, which is crucial for maintaining network uptime.
  • Input Voltage: This power supply unit operates with an input voltage of 100-240V AC, making it compatible with a wide range of power sources.
  • Efficiency: It boasts high energy efficiency, ensuring that power is utilized optimally and reducing energy costs.
  • Form Factor: The JPSU-920-AC-AFO has a compact form factor, allowing it to fit easily into the EX3400 switch chassis.
  • Connectivity: It is equipped with the necessary connectors and cables for easy installation and connection to the switch.

Importance of a Reliable Power Supply

A reliable power supply is crucial for the uninterrupted operation of network equipment. Without a stable power source, network devices, including switches, can become vulnerable to disruptions, leading to downtime, data loss, and potential security risks. The JPSU-920-AC-AFO power supply plays a vital role in ensuring the continuous operation of Juniper's EX3400 series switches.

Front-to-Back Airflow Design

The front-to-back airflow design of the JPSU-920-AC-AFO power supply is a notable feature. This design ensures that cool air is drawn in from the front of the unit and expelled from the back. This is a common configuration in data centers and network racks to maintain proper temperature control. Here's why it's important:

  • Temperature Regulation: Network switches generate heat during operation. The front-to-back airflow design helps dissipate this heat effectively, preventing overheating and potential damage to the power supply unit and the switches.
  • Rack Optimization: In network racks, devices are often stacked closely together. Front-to-back airflow aligns with the typical airflow pattern in rack installations, allowing for better organization and efficient use of rack space.
  • Cooling Efficiency: Proper cooling is essential for the longevity and performance of networking equipment. The JPSU-920-AC-AFO's airflow design ensures that the switch and the power supply are adequately cooled, reducing the risk of overheating-related failures.

Cord and Connector Compatibility

The JPSU-920-AC-AFO power supply unit comes with compatible power cords and connectors designed to seamlessly connect to the EX3400 switches and power sources. This ensures that you have all the necessary components for a hassle-free installation.

  • Power Cord: The power supply typically includes a power cord suitable for the target region. Users can also acquire additional power cords or adapters to match their specific power infrastructure.
  • Connector Type: The connector on the power supply unit is designed to securely connect to the corresponding power input on the EX3400 switch. This ensures a stable and reliable power connection.

Redundancy and Reliability

Redundancy is a critical feature in network infrastructure, and the JPSU-920-AC-AFO power supply supports this by allowing for the installation of multiple power supply units in a single switch. Redundant power supplies provide the following benefits:

  • High Availability: In the event of a power supply failure or maintenance, the redundant unit takes over, ensuring uninterrupted operation of the switch and the connected network.
  • Reliability: Redundant power supplies reduce the risk of downtime due to a single point of failure. This is especially important in mission-critical environments where network reliability is paramount.
  • Load Sharing: Redundant power supplies can be configured to share the load, which can extend the lifespan of the power supply units by evenly distributing the power demand.

Reliability and Uptime

Power supply units are at the heart of ensuring network reliability and uptime. Without a stable and reliable power source, network equipment cannot function. A sudden power outage or fluctuation can lead to network disruptions, data loss, and costly downtime. To mitigate these risks, high-quality power supply units like the JPSU-920-AC-AFO are essential.


As network infrastructures grow and evolve, the need for scalable power solutions becomes evident. Power supply units must be capable of meeting the increasing power demands of new equipment and expansions. Scalable power supplies, like the JPSU-920-AC-AFO, offer the flexibility required for network growth.

Efficiency and Cost Savings

Efficiency in power usage is a critical consideration in modern networking environments. Power supply units that can maximize energy usage while minimizing waste are not only environmentally friendly but also reduce operational costs. The JPSU-920-AC-AFO is known for its energy-efficient design, which can lead to cost savings over time.

Efficient Cooling

Effective cooling is vital for maintaining the optimal operating temperature of networking equipment. Overheating can cause equipment to malfunction or even fail. The front-to-back power airflow cord design ensures that cool air is drawn in from the front of the switch and exhausted out of the back. This consistent airflow pattern helps prevent overheating and prolongs the life of both the power supply unit and the switch.

Cable Management

The front-to-back airflow design also aids in cable management. Cables and cords are neatly routed from the front to the back of the switch, making it easier to organize and maintain a clean and efficient networking environment. Proper cable management can reduce the risk of cable damage or disconnection, which could lead to network disruptions.

Improved Cable Management

Effective cable management is often underestimated but plays a crucial role in network maintenance. The front-to-back airflow design aids in cable management by neatly routing cables from the front to the back of the switch. This organization reduces the risk of cable-related disruptions and simplifies maintenance and troubleshooting tasks.

Energy Efficiency

The JPSU-920-AC-AFO is designed with energy efficiency in mind. It operates at high-efficiency levels, which not only reduces energy costs but also aligns with environmental sustainability goals. Energy-efficient power supplies can lead to cost savings and a smaller carbon footprint.

Data Integrity

In network infrastructure, data integrity is of utmost importance. Abrupt power interruptions can lead to data loss and corruption. A reliable power supply helps protect against such data integrity issues.

Equipment Longevity

Power fluctuations and surges can damage network equipment. A stable power supply extends the lifespan of network devices by preventing electrical damage.

General Information of the Juniper JPSU-920-AC-AFO

  • Manufacturer: Juniper Networks
  • Part Number or SKU# JPSU-920-AC-AFO
  • Product Type: Plug-in Module

Power Description

  • Output Power: 920 W

In summary, the Juniper JPSU-920-AC-AFO is a vital component for maintaining the reliability and performance of Juniper EX3400 series switches. With its high power capacity, front-to-back airflow design, hot-swappability, and protective features, it ensures that the network infrastructure remains stable and functional.

A reliable power supply, such as the JPSU-920-AC-AFO, is a fundamental building block of any network, as it prevents costly downtime and data loss. By understanding its features, specifications, and proper installation, you can make the most of this critical component in your network infrastructure.

The Juniper JPSU-920-AC-AFO is a smart decision for network administrators and businesses that rely on the Juniper EX3400 series switches. It provides peace of mind and ensures that your network operates smoothly and efficiently, reducing the risk of disruptions and downtime.

Juniper Networks
Brand Warranty:
3 Years from the Manufacturer
Product Condition:
New Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

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What does ALLHDD.Com warranty cover?

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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.

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(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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