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USB Ports

Discussion in 'Motherboard - MOBO' started by biferi, Apr 3, 2022.

  1. biferi

    biferi Registered Members

    Joined:
    Mar 4, 2016
    Messages:
    908
    Operating System:
    Windows 7
    A SmartPhone Charger Plugs into a 120 Volt A.C. Outlet.

    The Charger Converts the 120 Volts A.C. to 5. Volts D.C. for the SmartPhone to Charge.

    But if You use the USB Port on Your Computer to Charge Your SmartPhone You just Plug the USB Cable from Your SmartPhone Right into the USB Port on Your Computer.

    So am I Right the USB Ports on Your Computer are putting out D.C. or do I have this incorrect?
     
    biferi, Apr 3, 2022
    #1
  3. Tony D

    Tony D Administrator Administrator

    Joined:
    Sep 25, 2009
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    SE Pennsylvania, USA
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    You are correct. USB ports by definition output 5V DC. A computer should be able to supply up to 500 mA. So that's 2.5 W. I prefer to charge my cell phone with my computer because it'll do it slower than the charger that came with your phone. Therefore the batteries don't get as hot during the charge period. It takes longer to charge because it's charging using less current.
     
    Tony D, Apr 3, 2022
    #2
    IJAC likes this.

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