I just learned this week that my old Dell Venue 11 Pro's will happily accept 19/20V if given, without any sideband communication. The laptop has a custom Dell c

I just learned this week that my old Dell Venue 11 Pro's will happily accept 19/20V if given, without any sideband communication. The laptop has a custom Dell charger, and usb-micro input, which could negotiate via a custom protocol to a higher power level. But folks are reporting that if you make a 20V USB-micro, they'll charge. Sweet. Riskier than this links careful negotiation over 1-wire, but so convenient. I'll probably rip apart one of my usb-c to 20v barrel jacks & make a cable, in case I want to go back to these units. The need for a custom charger has been a huge barrier to ever wanting to use them again, very nice that these old systems will just work, when given power.