Power supplies for desktop computers are a standard design, but vary in output power. If you have more powered components (hard drives, optical drives, graphics cards, etc.) in your machine, you'll need a larger power supply. This is the main consideration when upgrading your computer.

Power supplies for laptop computers are usually specific to that make of laptop with each one potentially having a different output rating and connector. If you need to replace your power supply, you need to make sure you get one that's compatible:

See also

  • (uninterruptible power supply)
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