[kwlug-disc] USB 2.0 hubs, and power ...

[Andrew Kohlsmith (mailing lists account)]

> On Oct 29, 2019, at 2:05 PM, Andrew Kohlsmith (mailing lists account) <aklists at mixdown.ca> wrote:
> e.g. let’s say the camera draws 300mA at 5V (150mW), but the USB cable is cheap and you have a couple ohms of resistance in the cable.  V=0.3*2 meaning your camera is only seeing 4.4V. This has the additional side effect of the camera drawing more current for the same 150mW power, if it powers up at all.

*sigh*… that is 1.5W, not 150mW.

-A.