And once again...
There simply is no such thing as "the first dual mode monitor"
All monitors could always run at lower resolutions and unless explicitly prohibited on the firmware which does happen in certain models, lowering resolution does free up bandwith which usualyl allows you to increase refresh rate.
I remember my first LCD monitor was an AOC M19W531 which was a 1440 x 900 60hz monitore, but I could run it at 75hz, or I could increase resolution to 1600x1200 while dropping refresh rate, I could also lower resolution and get 90hz or 100hz out of it.
It was my lab mouse for a few years, nowadays I don't try these things anymore, I'm just content with the specs I buy but this kind of thing can still be done in most monitors.
I mean, you can just do it! there's no need to have it advertised on the box, no need to have news articles written about this ancient technique that all monitors have been compatible with since ever.
And that's ignoring CRT monitors that could literally change the amount of pixels on display instead of having a fixes native resolution and stretching or compacting resolutions that are different from that like modern displays do.
