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Small black rectangular hub with two DisplayPort sockets and one input connector

Monoprice Inc.

Monoprice 121972 2-Port DisplayPort 1.2 MST Hub

SKU CH-BF0M-4W38K

Splits one DisplayPort 1.2 signal to two monitors, mirroring at 4K@60Hz or extending at 4K@30Hz per display

  • Adapter typeAV & Computer Adapters
  • Key featuresMulti-Stream Transport (MST) Hub: An MST Hub enables three d
  • Extend desktop across two monitors at 4K 30 Hz each
  • Mirror single display at 4K 60 Hz for presentations
  • Multi-Stream Transport hub drives two screens from one DisplayPort output
  • Ideal for digital signage in schools and conference rooms
  • Supports DisplayPort 1.2 for compatible video sources

Monoprice 121972 MST Hub for DisplayPort 1.2

This DisplayPort 1.2 MST hub splits a single DisplayPort output into two independent DisplayPort connections. It suits installers running digital signage, classroom displays, or retail video walls who need to drive two screens from one source. The compact adapter requires no external power and works with standard DisplayPort cables. It is not for users needing more than two outputs or resolutions beyond the stated limits.

Upgrading from single-display or splitter setups

A passive splitter can only mirror the same image on two screens, while this hub adds extended desktop mode at up to 4K@30Hz per display. The jump is worth it when you need independent content across two monitors, such as side-by-side signage panels or a presenter view plus audience screen. It replaces daisy-chained MST monitors when the displays lack DisplayPort 1.2 output ports. Buyers who need 4K@60Hz on both screens simultaneously cannot use this hub.

Driver-free installation with common caveats

The hub is recognised automatically by Windows and macOS without extra drivers; plug the host cable into the source, then connect up to two displays. Extended mode at 4K@30Hz requires a DisplayPort 1.2 source and certified cables — older cables often limit the link to 1080p. Some laptops disable MST over USB-C alt mode, so verify the port supports MST before purchase. Monitors must be powered on before the host wakes, otherwise the hub may not detect the second display.

How it compares

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Price $36.99
Pricier than about 82% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Brand nameMonoprice
Model name121972
Part number121972
Adapter typeAV & Computer Adapters

Questions about this item

What size DisplayPort connector does the Monoprice 121972 hub need on the host computer?

The hub connects to a standard DisplayPort 1.2 output on the host computer; the package includes a short integrated cable with a full-size DisplayPort plug.

Which step do people miss when setting up the Monoprice 121972 MST hub for extended desktop mode?

After plugging in both monitors, open the operating-system display settings and enable extended desktop; the hub will not span the image across two screens until that setting is changed.

When will the Monoprice 121972 hub need to be replaced if used daily for digital signage?

The hub has no moving parts or user-replaceable components; plan to replace it only if the DisplayPort connectors wear out or if a future display requires bandwidth beyond the 4K@30Hz per screen limit.

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