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Old Dec 21, 2018, 1:54 am
  #2  
der_saeufer
 
Join Date: Dec 2010
Location: DEL
Posts: 1,053
The USB-PD standard covers charging up to 100W (20V/5A) over a USB-C connection, but it's unlikely your laptop's ports can output anything other than 5V.

Dell's page appears to have some editing errors--my guess is that the sentence you quoted should say "can supply 100W of power for charging or power a 15W device"--but here's a graphic from the same page that makes more sense:



Thunderbolt 3 supports 100W input (i.e. for charging your laptop on those laptops that charge over USB-C), but can only output 15W (5V/3A) for charging or powering devices.

Unfortunately, that means you'll have to continue to use a brick to power the monitor if it needs 12V.

It looks like there are monitors available with a low enough power draw that they can run off nothing but a Thunderbolt 3 or USB-C displayport, e.g. a couple ASUS ZenScreens

Last edited by der_saeufer; Dec 21, 2018 at 2:17 am
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