Re: confirmation of uselessness re: motherboard eDP port

On 3/17/2025 1:45 PM, bitrex wrote:

ASRock seems to be the champion of motherboards with gimmicks. This mini-ITX desktop PC motherboard:
 <https://www.asrock.com/mb/Intel/H610M-ITXeDP/index.asp>
 has an eDP port for connecting a laptop-like display to the iGPU, ostensibily for mounting a side panel display _inside_ the case to show through the window on the case, as the cool gamer kids do.

What would be the purpose of such an *extra* display?  Do you envision
it as a second monitor that requires the PC to be located at eye level
(instead of beneath the work-surface)?  Does that save anything
over just plugging a second EXTERNAL monitor into a second video
port (prettymuch commonplace, nowadays)
If you're just looking for a nominal "information display", then something
that hangs off a ubiquitous internal USB or serial port seems a safer
bet (I have a little "module" that I use for such a purpose -- mainly to
tell me why a boot goes awry)

This associated product seemed to be on the market for 5 minutes but seems to be discontinued, or never actually fully went to market in the first place:
 <https://www.asrock.com/mb/spec/product.asp?Model=13.3%E2%80%9D%20Side%20Panel%20Kit>
 The port on the motherboard is 40 pin but accepts an 88441-style male plug, not directly compatible with common eDP laptop panels I don't think. And comparing the pinout in the mobo user manual they've used a variant this standard 40 pin eDP pinout:
 <https://cdn.hackaday.io/images//8270581660348878152.png>
 but the pin assignment is reversed top-to-bottom. Also as I understand it eDP doesn't have any standardized way of controlling backlight brightness there are a couple ways of doing it and one would have to probe the motherboard port to find out which method is being used it and then either find a compatible display or implement one's own backlight control hardware.
 That is to say I just want to make sure they really worked to make this port useless without their bespoke hardware so I don't have to waste any more time thinking about interesting things one could do with an internal eDP port if they hadn't done that, thanks!