Believe it or not, not all USB ports yield the same amount of power, but here's a $10 gadget that can show you which ones you ...

We’ve all seen the little USB power meters that have become popular since nearly every portable device has adopted some variation of USB for charging. Placed between the power source and the device ...

Agilent's power meters have had a reputation as an industry standard going back to the Hewlett Packard Model 430A, before HP spun off its test and measurement division as Agilent. Agilent's new power ...