HP 656522-001 Desktop Power Supply Power Supply
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656522-001 HP 400 Watt Power Supply For Z1 G2 Workstation.. Refurbished

Availability: In Stock
Part Number#: 656522-001
List Price was: $283.72
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Short Description:
656522-001 HP 400 Watt Power Supply For Z1 G2 Workstation. Refurbished.
Product Condition:
Warranty provided by ALLHDD.COM:
30 Days

Product Information

The HP 400 Watt Power Supply is a crucial component of the Z1 G2 workstation, providing power to all the internal components and ensuring their smooth operation. This power supply unit (PSU) is designed specifically for the Z1 G2 workstation and is built to deliver reliable and efficient power.

In this article, we will dive into the details of the 656522-001 HP 400 Watt Power Supply for the Z1 G2 workstation. We will cover everything from its specifications and features to its installation and maintenance, to help you better understand this essential component of your workstation.

Specifications and Features

The 656522-001 HP 400 Watt Power Supply is a high-quality PSU designed to meet the specific power requirements of the Z1 G2 workstation. Here are some of the key specifications and features of this power supply:

  • Power output: The power supply delivers a maximum output of 400 watts, which is sufficient to power all the internal components of the Z1 G2 workstation.
  • Input voltage: The PSU operates on a universal input voltage of 90-264V AC, making it compatible with power sources from around the world.
  • Efficiency: The power supply is highly efficient, with an energy efficiency rating of 80 Plus Bronze. This means that it converts 80% or more of the input power into usable DC power, reducing energy waste and lowering your electricity bill.
  • Connectors: The PSU comes with a variety of connectors to support all the internal components of the Z1 G2 workstation. These connectors include a 24-pin ATX connector, an 8-pin EPS12V connector, six SATA connectors, and two 6-pin PCIe connectors.
  • Cooling: The power supply is designed with a high-quality fan that helps keep the internal components cool and ensures their reliable and efficient operation.


Installing the 656522-001 HP 400 Watt Power Supply in your Z1 G2 workstation is a simple process. Here are the steps you need to follow:

  • Step 1: Turn off your workstation and unplug it from the power source.
  • Step 2: Remove the side panel of the workstation by unscrewing the screws at the back of the panel.
  • Step 3: Locate the existing power supply in the workstation and disconnect all the cables connected to it.
  • Step 4: Remove the screws holding the power supply in place and gently pull it out of the workstation.
  • Step 5: Insert the new 656522-001 HP 400 Watt Power Supply into the workstation and secure it in place using the screws.
  • Step 6: Connect all the cables to the new power supply, ensuring that they are plugged in securely and in the correct orientation.
  • Step 7: Replace the side panel of the workstation and secure it in place with the screws.
  • Step 8: Plug in the power cable and turn on the workstation.


The 656522-001 HP 400 Watt Power Supply is a reliable and long-lasting component of the Z1 G2 workstation. However, like all electronic components, it requires regular maintenance to ensure its optimal performance and longevity.

Here are some maintenance tips for your power supply

  • Keep the power supply clean: Dust and debris can accumulate on the power supply and obstruct the airflow, leading to overheating and reduced performance. Regularly clean the power supply with a soft brush or compressed air to remove any dirt or debris.
  • Check the fan: The fan in the power supply is critical for keeping the internal components cool. Make sure the fan is functioning correctly and clean it if necessary.
  • Monitor the temperature: High temperatures can damage the power supply and other internal components. Keep an eye on the temperature of your workstation and make sure it stays within the recommended range.

General Information about the HP 656522-001

  • Manufacturer: HP
  • Part Number or SKU# 656522-001
  • Product Type: Power Supply
  • Product Name: Desktop Power Supply

Technical Specifications

  • Output power: 400W
  • Input voltage range: 100-240V
  • Input frequency: 50-60Hz
  • Efficiency: 90% at 50% load
  • Form factor: ATX12V 2.31
  • Dimensions (H x W x D): 86 x 150 x 140 mm (3.4 x 5.9 x 5.5 in)
  • Weight: 1.36 kg (3 lb)
  • Connectors:
    • 1 x 24-pin ATX main power connector
    • 1 x 4+4-pin EPS CPU power connector
    • 1 x 6-pin PCIe power connector
    • 1 x 6+2-pin PCIe power connector
    • 3 x SATA power connectors
    • 1 x 4-pin peripheral power connector


  • Compatibility For System Z1 G2 Workstation

Power Description

  • Input Power Range: 100-127V / 200-240V Line Frequency: 45-66Hz
Product Condition:
Warranty provided by ALLHDD.COM:
30 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.

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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.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

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Shipping Options and Estimated Delivery Time

UPS Shipping Options:

FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days

UPS 3 Day Select®
Estimated delivery time: 3 business days

UPS 2nd Day Air®
Estimated delivery time: 1-2 business days, Delivery by 10:30 AM or 2:00 PM

UPS Next Day Air® Standard Overnight
Estimated delivery time: Overnight 2-5 PM, Standard Overnight Delivery.

UPS Next Day Air® - Priority Overnight
Estimated delivery time: Overnight Delivery (Next Business Day) Delivery by 10:30 AM or 12:00 PM

UPS Next Day Air® First Overnight - Early A.M
Estimated delivery time: Overnight 8:00 AM, Early morning, overnight delivery for your time-critical shipments.

UPS® First Overnight - Saturday
Estimated delivery time: Overnight 8:30 AM – Saturday

FedEx Shipping Options:

FedEx Ground®
Estimated delivery time: (4–7 business days in the contiguous 48 states)
*For residential delivery via FedEx Ground use FedEx Home Delivery®
Estimated delivery time: 4−7 business days, based on the distance to the destination.

FedEx Express Saver®
Estimated delivery time: 3 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states (except Hawaii and Alaska)

FedEx 2Day®
Estimated delivery time: 2 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states

FedEx Standard Overnight®
Estimated delivery time: Next-business-day (by 4:30 PM to U.S. businesses and by 8:00 PM to residences)
Available throughout all 50 states (Hawaii is outbound only)

FedEx Priority Overnight®
Estimated delivery time: Next-business-day (by 10:30 PM to U.S. businesses, noon to most residences)
Available throughout all 50 states

FedEx First Overnight®
Estimated delivery time: Next-business-day (by 8:30 or 9 AM to most areas)
Available throughout all 50 states

Worldwide Shipping Options:

UPS®/FedEx® International Economy

Estimated delivery time: 4-7 business days

UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

  • The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
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  • If you have any specific delivery time requirements, please contact our customer support and someone from our customer service team will be able to help you.
  • You can estimate the shipping cost from the products detail page, also available on the checkout page
  • The shipping cost depends on box dimensions, weight, and zip/postal code
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