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As you may know, DisplayPort 1.2 and later versions support MST (multi-stream transport). But there is also a feature called USB-C DisplayPort 1.2 Alt Mode (Alternate Mode), which allows a USB-C port to transmit video and audio signals using the DisplayPort standard. So to determine if your PC or laptop supports MST  (multi-stream transport), you have to make sure if your devices have DisplayPort or USB-C ports and follow the following steps in the article.

MST (Multi-Stream Transport), first introduced in the DisplayPort 1.2 standard, allows multiple displays to connect to a single DisplayPort on a computer. It combines several video signals into one stream and sends it through a DisplayPort cable. Users can connect their laptop or desktop to multiple monitors using just one DisplayPort. A device, such as an MST hub or a series of daisy-chained MST monitors, then separates the signals to display on multiple screens.