On Wed, Apr 14, 2021 at 7:42 PM Felix Miata <mrmazda@earthlink.net> wrote:
Lukas Ruzicka composed on 2021-04-14 18:02 (UTC+0200):

> *On computers with a possibility to connect an external monitor (e.g. two
> monitors on a desktop and one external monitor on a laptop)...                                                                               
"Desktop" to me implies not server, not tower, not mini-tower, not micro.

Strike "possibility". In use must be the use case, so:

* On computers using two displays

I like this beginning better ^
 
, dual video outputs on a common PC,

I don't think that a "common PC" is a better term than a "desktop PC".
 
or a
connected external display with a laptop display...

So it could sound like this:
"On computers using two monitors (e.g. two monitors on a desktop, or the integrated screen and one external monitor on a laptop), the graphical output is correctly shown on both monitors."

I replaced "video" with "graphical output", to clear any possible confusion about movies playback :) The terms monitors/displays/screens are interchangeable, I guess? Native speakers should fine-tune this.