usb milliwatts

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Discussion in 'General Electronics Chat' started by aac9876, Apr 15, 2007.

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Apr 15, 2007 #1

aac9876 Thread Starter Active Member

Dec 9, 2006

124

0

about how many milliwatts does a common usb port push,
like thru a usb wifi adaptor?

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Apr 15, 2007 #2

hgmjr Retired Moderator

Jan 28, 2005

9,029

219

You can find out a lot of infromation on the USB 2.0 spec at www.usb.org.

It looks as though 2.5 watts is about the max.

hgmjr

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Apr 16, 2007 #3

n9352527 AAC Fanatic!

Oct 14, 2005

1,198

6

100mA at 5V normally with standard descriptor. Up to 500mA max. at 5V available with successful negotiation only. So that's 0.5W and 2.5W respectively like hgmjr posted above.

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Apr 18, 2007 #4

aac9876 Thread Starter Active Member

Dec 9, 2006

124

0

if you ad a 1 watt amp to either one, would it be more powerful or not
because it is already over 1 watt...??? thanks

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