Good instrument for little money

Good instrument for little money

PortaPow USB Power Monitor power meter / power meter digital multimeter ammeter (accessory)
Buy at Amazon.com

Customer Review

I bought the Porta to time to see how much electricity use my USB devices. And lo and behold:
Not every PC does exactly 5V, and some consumers load the USB port pretty. Quick and easy to handle,
good unit for the price. Does exactly what it should.

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