Hacker News Reader

Could you tell us what MST stands for? I doubt you mean “mountain standard time” :-)

Multi-stream transport.

If you have a dock with say, HDMI and DisplayPort and have both plugged in, with a mac you can't use a single dock for multiple displays in this way. You'd have to use DisplayLink.

Software. My 2012 MBP can do MST fine in Boot Camp, but the feature isn't implemented in the macOS drivers.

Apple's canonical answer is "use Thunderbolt". It will never be implemented.