Is the USBC-MSTH2 USB-C to dual HDMI adapter compatible with macOS, iPadOS?

Last Update: November 4th, 2026
Article ID: 1964014

Summary

The Plugable USBC-MSTH2 Dual HDMI MST Adapter can provide video output on compatible Mac computers and iPads. However, it is not recommended for users who want to connect two independent extended displays.

This is because macOS and iPadOS do not support Multi-Stream Transport (MST) for multiple independent extended displays, which is the technology the USBC-MSTH2 uses.

While the adapter may function with these devices, both connected external monitors will display mirrored content rather than two separate extended desktops.

Applicable To

  • Plugable USB-C Dual HDMI MST Adapter (USBC-MSTH2)
  • Mac computers running macOS
  • Compatible USB-C iPads running iPadOS

What to Expect

  • macOS: One external display can extend the desktop, while the second monitor mirrors that external display.
  • iPadOS: Both connected monitors display the same content. Whether that content mirrors the iPad screen or provides an extended workspace depends on the iPad model.
  • Windows and ChromeOS: Compatible systems with DisplayPort Alt Mode and MST support can use two independent extended displays.

Important Notes

  • The USBC-MSTH2 is not recommended for dual extended displays on macOS or iPadOS.
  • The adapter requires a USB-C port supporting DisplayPort Alt Mode.
  • No additional drivers or software are required.
  • For Mac users who need two independent external displays, a compatible Plugable DisplayLink docking station or adapter may be a better option. DisplayLink products require compatible software and may have additional system requirements.

For additional product specifications, see the Plugable USBC-MSTH2 Product Page.

Need Assistance?

If you're looking to connect two independent external monitors to your Mac or iPad, please contact Plugable Support at support@plugable.com before purchasing.