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  2. Power supply unit (computer) - Wikipedia

    en.wikipedia.org/wiki/Power_supply_unit_(computer)

    For example, a 900-watt power supply with the 80 Plus Silver efficiency rating (which means that such a power supply is designed to be at least 85% efficient for loads above 180 W) may only be 73% efficient when the load is lower than 100 W, which is a typical idle power for a desktop computer. Thus, for a 100 W load, losses for this supply ...

  3. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    A large data-center-scale UPS being installed by electricians. An uninterruptible power supply (UPS) or uninterruptible power source is a type of continual power system that provides automated backup electric power to a load when the input power source or mains power fails.

  4. System Mechanic Software | 30-Day Free* Trial | AOL Products

    www.aol.com/products/utilities/system-mechanic

    Download System Mechanic to help repair and speed up your slow PC. Try it free* for 30 days now. AOL.com. Products ... Sign out; Restore your PC's speed, power and stability with System Mechanic.

  5. Backup battery - Wikipedia

    en.wikipedia.org/wiki/Backup_battery

    Backup batteries are used in uninterruptible power supplies (UPS), and provide power to the computers they supply for a variable period after a power failure, usually long enough to at least allow the computer to be shut down gracefully. [4] These batteries are often large valve regulated lead-acid batteries in smaller or portable systems.

  6. Retrospect (software) - Wikipedia

    en.wikipedia.org/wiki/Retrospect_(software)

    Retrospect is a family of software applications that back up computers running the macOS, Microsoft Windows, and Linux (and until 2019 classic Mac OS) operating systems.It uses the client–server backup model.

  7. PowerBook 500 series - Wikipedia

    en.wikipedia.org/wiki/PowerBook_500_series

    The 100–240 V power supply is on top. The PowerBook 500 series (codenamed Blackbird , which it shared with the older Macintosh IIfx ) is a range of Apple Macintosh PowerBook portable computers first introduced by Apple Computer with the 540c model on May 16, 1994.

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