DisplayPort Multi-Stream Transport (MST)

MST means Multi-Stream Transport which allows multiple displays to be connected to a single DP port on a Windows 10 / 8.x / 7 computer since DP 1.2. It does this by combining multiple video signals into a single stream (a process known as multiplexing) and sending it over a DisplayPort 1.2 or higher cable to a device that unbundles the signal. The "unbundling" device might be an MST Hub or a series of "daisy-chained" MST monitors.

OS SUPPORTING MST

Supported OS - Windows 10, Windows 8/8.1 and Windows 7. 
While Mac OS X or Chrome OS™ (although Chrome OS support is rumored to be in the pipeline) does not support MST.

MST REQUIREMENTS

  • Graphics card (GPU) supporting DisplayPort (1.2 or better) MST
  • An MST Hub or MST supported Docking Station
  • DisplayPort 1.2 MST-capable monitor with MST mode enabled
  • DP 1.2 or above cable

MST CONFIGURATION OPTIONS

Daisy-Chained Monitors

DisplayPort MST lets you daisy-chain monitors with DisplayPort 1.2 ports (each monitor must have a DP output port that supports MST). Daisy chaining means connecting your laptop to monitor A, then connecting monitor A to monitor B and so on. The number of monitors you can daisy-chain is limited and depends on the resolution and frame rate. The last monitor in the chain does not need to support DP MST.

DisplayPort MST Hub

A DisplayPort MST hub offers the most flexibility. For example, you can connect up to 4 HDMI monitors or televisions. You can also create a video wall, making a hub ideal for digital signage in schools, churches, conference rooms, trade shows and retail outlets.

MST-compliant DisplayPort graphics cards have limited bandwidth. An MST hub will split this total bandwidth between the connected monitors, with 1080p monitors consuming approximately 22% of bandwidth and 4K monitors using 40% or more. For example, this means you can connect up to 4 monitors with a resolution of 1080p to a DP 1.2 port.

MST Hub Display Modes

An MST Hub supports 3 x modes for multi-monitor displays: Mirror Mode, Extended Mode, and Video Wall Mode. The computer Graphics card determines the Max. supported video resolution and the number of monitors. Please check your graphics card specs to determine its capability.

1. MIRROR MODE
Retail environments with in-store product promotion screens
Arrival and departure boards in airports, bus terminals and train stations
Video presentations in classrooms, churches or auditoriums and multiple information booths and kiosks at trade shows. 

2. EXTENDED DESKTOP MODE
Extended mode is especially useful in presentations when you want to display notes or reference data on one screen while performing a demonstration or showing a video on another screen.

3. VIDEO WALL MODE
In multi-stream video wall mode, the monitors will correctly display your content to create a dazzling, eye-catching presentation. Create a panoramic digital sign or wow the crowd at your next trade show. A computer with a DisplayPort 1.2-compatible graphics card (such as AMD Radeon with AMD Eyefinity technology) is required to display in video wall mode.