Monoprice

Monoprice 121974 DisplayPort 1.2 to HDMI MST Hub

4.1 (193 reviews)
4KDisplayPort

Expand Your Display Capabilities with Multi-Stream TransportThe Monoprice 2-Port DisplayPort 1.2 to HDMI MST Hub allows you to connect multiple HDMI displays to a single DisplayPort output. This hub supports various display modes, including duplicate and extended desktop, making it ideal for digi...

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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Expand Your Display Capabilities with Multi-Stream Transport

The Monoprice 2-Port DisplayPort 1.2 to HDMI MST Hub allows you to connect multiple HDMI displays to a single DisplayPort output. This hub supports various display modes, including duplicate and extended desktop, making it ideal for digital signage, video walls, and more.

Specifications Overview

  • Brand: Monoprice
  • Model: 121974
  • Type: 2-Port DisplayPort 1.2 to HDMI MST Hub
  • Input: DisplayPort 1.2
  • Outputs: 2 x HDMI
  • Maximum Resolution (Single Display): 4K@60Hz
  • Maximum Resolution (Dual Display): 4K@30Hz per display

Key Features

Connector type: 4-Pin Mini DIN

This 2-Port DisplayPort 1.2 to HDMI Multi-Stream Transport (MST) Hub enables two different display modes on up to two monitors connected to a single DisplayPort output

You can connect a single display at resolutions up to 4K@60Hz to mirror your computer's desktop. Alternatively, you can connect two monitors and the hub will extend the image to span the two displays at resolutions up to 4K@30Hz for each display

An MST Hub enables three different display modes on up to four monitors connected to a single Mini DisplayPort output.

This hub is ideal for digital signage and large video displays in schools, churches, conference rooms, at trade shows, and in retail outlets.

*Note that macOS does not support MST on NVIDIA or Intel GPUs.

Specifications

Hub Type
DisplayPort 1.2 to HDMI MST Hub
Input
DisplayPort 1.2
Output
HDMI
Maximum Single Display Resolution
4K@60Hz
Maximum Dual Display Resolution
2x 4K@30Hz
Number of Monitors Supported
Up to two
macOS Compatibility
No MST support on NVIDIA or Intel GPUs

Pros & Cons

👍 Pros

  • Enables two distinct display modes, mirroring or extending, on up to two monitors from a single DisplayPort output.
  • Supports high resolutions, allowing a single display up to 4K@60Hz or two displays up to 4K@30Hz each.
  • Ideal for various professional and public display applications like digital signage, conference rooms, and retail.
  • Transforms a single DisplayPort 1.2 output into a multi-monitor solution, enhancing productivity and display options.
  • The hub facilitates extending images across two displays, creating a more expansive viewing area for tasks.

👎 Cons

  • This MST hub is specifically designed for DisplayPort 1.2 input, limiting compatibility with older DisplayPort versions or other video outputs.
  • macOS does not support MST on NVIDIA or Intel GPUs, which significantly limits its functionality for Mac users.
  • The hub only supports up to two monitors in extended mode at 4K@30Hz; users requiring higher refresh rates or more monitors may find this limiting.
  • The connector type listed as "4-Pin Mini DIN" appears to be an error in the features and contradicts the "DisplayPort 1.2 to HDMI MST Hub" product title, causing confusion.
  • Specific details about power requirements or the inclusion of a power adapter are not provided.

Frequently Asked Questions

This hub enables the connection of up to two monitors to a single DisplayPort output, supporting either mirrored or extended desktop display modes.
You can connect a single display at resolutions up to 4K@60Hz, or two monitors with extended images at resolutions up to 4K@30Hz for each display.
No, macOS does not support Multi-Stream Transport (MST) on NVIDIA or Intel GPUs, meaning this hub's key functionality will not work with those Mac systems.
This hub is ideal for digital signage, large video displays in schools, churches, conference rooms, trade shows, and retail outlets due to its multi-monitor capabilities.
The Monoprice MST Hub requires a DisplayPort 1.2 output from your source device for proper functionality.