I got a little USB volt/amp/power meter thingamajig to help with out with the occasional USB power related shenanigans. It seems to work quite well and update fast, too.
This photo was taken while I was charging my smartphone, just as an example. I already used it to verify a certain cable I got was actually a feasible power supply replacement for a floppy disk drive. It's really quite handy to have this on hand for such occasions.
#USB #Electronic #Electronics #Hardware #Pluggable