It irks me that there are no good small cheap AMD Motherboards that could drive 3 or more DP 4K monitors at the same time.
Even though SoC itself offers 4 graphic outputs (DP/HDMI), MoBo manufacturers charge those DP connectors as if they were made of gold.
Which leaves using MST hub as the only option.
But MST HUBS are generally expensive AND they are limited to older versions of the standard (1.4a), which means only half the bandwith that is available
on latest AM5 chips (DP 2.0) etc.
Since these are in general quite simple PCBs (basically only HUB chip + connectors), I've thought about rolling one of my own.
Even better, as people generally change MoBo/CPU/RAM more often than monitors these days, such a DIY hub could
be even more cost effective, especially if done in open-source fashion...
But I've problem with finding a HUB chip that supports the latest version of the standard.
Basically, all that I've managed to find is Kinetic Technologies HUB. it's $14-ish (which is fine), but it only does DP1.4:
https://www.kinet-ic.com/KTM5030/Would anyone care to share better idea ?