How to Test USB power from Motherboard

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klrman

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Sep 2, 2014
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Is there a simple way to test the power output of one of the usb ports on my motherboard? I have a 40 foot long active USB extension cable and want to make sure the port is powered up enough.
 
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Eximo
I wouldn't worry too much on a keyboard/mouse they have very little power draw.

Looks like they are pulling all the power from your USB port, I would plug it into a USB 3.0 port if you have one, or whichever ports are colored on your system. Yellow/Red are often used to indicate always on/charging ports.
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Eximo

Eximo

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I guess that depends on what equipment you have. If you have the proper equipment, I doubt you would be asking though.

What is your target current delivery? Or are you asking about voltage?

What revision of USB? What Type (A, B, C, Mini, Micro)?

Is this active cable powered independently? What is the rating they give it?
 
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Eximo

Eximo

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May 27, 2010
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I wouldn't worry too much on a keyboard/mouse they have very little power draw.

Looks like they are pulling all the power from your USB port, I would plug it into a USB 3.0 port if you have one, or whichever ports are colored on your system. Yellow/Red are often used to indicate always on/charging ports.
 
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