Hewlett packard desktop psu: a guide to power supply units

When it comes to desktop computers, one of the most important components is the power supply unit (PSU). The PSU is responsible for providing power to all the other components in the computer, ensuring that they receive the necessary electricity to function properly. In the case of Hewlett Packard (HP) desktop computers, there is a specific PSU that is only rated at 180 watts. In this article, we will explore what a proprietary power supply is, the different power supply form factors, and the various connectors found in an HP desktop PSU.


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What is a Proprietary Power Supply?

A proprietary power supply is a power supply unit that is designed specifically for a particular brand or model of computer. In the case of HP desktop computers, they often have their own proprietary power supply form factor that is not compatible with other computer models or vendors' machines. This means that if you need to replace the power supply in an HP desktop computer, you will need to find a PSU that is specifically designed for that model.

Power Supply Form Factors

Power supplies come in different shapes and sizes, known as form factors. The most common power supply form factors are ATX, ATX12V vx, ATX12V vx, and micro-ATX. However, there are also other form factors such as LFX12V, SFX12V, EPS12V, CFX12V, TFX12V, WTX12V, and FlexATX, each designed for specific computer systems or configurations.

It's important to note that both the motherboard form factor and the power supply form factor must be compatible and fit in the case for the computer to function properly. To ensure optimum performance, it is recommended to research and determine what connectors and form factors are supported by both the motherboard and power supply.

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The ATX12V Version 2 Standard

The ATX12V version 2 standard is a widely used power supply form factor. It features a 24-pin motherboard connector instead of the older 20-pin version 1 connector. The newer version also eliminates the need for an extra 6-pin auxiliary connector. Additionally, version 2 power supplies come with a SATA power connector, which is used to provide power to SATA devices such as hard drives and optical drives.

It's worth noting that some 24-pin motherboard connectors are backward compatible and accept the 20-pin power supply connector. However, if your motherboard requires a 24-pin connector and your power supply only has a 20-pin connector, you can purchase a 24-pin to 20-pin power adapter to make them compatible.

ATX Power Supply Connectors

An ATX power supply comes with various connectors that provide power to different components in the computer. Here are some of the common connectors found in an ATX power supply:

hewlett packard desktop psu only 180 watts - What is a proprietary power supply

  • 24-pin Main ATX Power Connector: This connector supplies power to the motherboard and typically carries voltages of +3V, +5V, +12V, and -12V.
  • 20-pin Main Power Connector: This is the older version of the main ATX power connector and is compatible with some motherboards that still use it.
  • 15-pin SATA Connector: This connector provides power to SATA devices such as hard drives and optical drives.
  • 8-pin 12V for CPU: This connector is used to provide power to the CPU and is typically used with an ATX12V v1 power supply.
  • 8-pin PCIe Video Connector: This connector is used to provide power to PCIe video adapters. Some connectors are labeled as 6+2-pin, which means they can accept either a 6-pin or 8-pin cable.
  • 6-pin PCIe Video Connector: Similar to the 8-pin PCIe video connector, this connector is also used for PCIe video adapters.
  • 4-pin Molex Connector: This connector is used to provide power to peripheral devices such as hard drives and CD/DVD drives.
  • 4-pin Berg Connector: This connector is also used for peripheral devices such as floppy drives.
  • 3-pin Fan Connector: This connector is used to monitor the speed of fans in the computer.

These are just some of the connectors commonly found in an ATX power supply. The availability and quantity of connectors may vary depending on the manufacturer and model of the power supply.

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Q: Can I use a non-HP power supply in an HP desktop computer?

A: It is generally recommended to use a power supply that is specifically designed for the brand and model of your computer. However, if you are knowledgeable about power supply compatibility and have ensured that the form factor and connectors match, it is possible to use a non-HP power supply in an HP desktop computer.

Q: How do I know if my power supply is compatible with my motherboard?

A: To determine compatibility, you need to check the form factor and connectors of both the power supply and the motherboard. Refer to the documentation or specifications of your motherboard and power supply to ensure they are compatible.

Q: Can I upgrade the power supply in my HP desktop computer?

A: Yes, you can upgrade the power supply in your HP desktop computer if you need more power to support additional components or higher-end hardware. However, it is important to ensure compatibility with the motherboard and other components in your computer.

Q: What should I consider when choosing a power supply for my desktop computer?

A: When choosing a power supply, you should consider factors such as wattage, efficiency, form factor, and the number and type of connectors available. It is also important to choose a reputable brand and ensure that the power supply meets the necessary certifications and safety standards.

The power supply unit is a crucial component in any desktop computer, including HP desktops. Understanding the different power supply form factors, connectors, and compatibility is essential when it comes to choosing and replacing a power supply. By ensuring that the power supply is compatible with the motherboard and other components, you can ensure the proper functioning and performance of your desktop computer.

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