On 02/06/2018 12:05 AM, Tor Arntsen via cctalk wrote:
.. which led me to accidentally power a USB hub with
12V instead of
5V - the power supplies looked the same, had the same plug, and I
couldn't read the tiny writing on the warts. That blew the nicest
notebook PC I've ever found - I bought it in Japan at a special
price, the normal price is out of my league.
I've done worse--used an AC-supply wall wart on a piece of equipment.
Poor thing didn't stand a chance.
You'd have thought that after all these years, some sort of keying
system would have been developed, but I guess not.
--Chuck