Does the Plugable USBC-MST2 video adapter come with a power supply?

Last Update: November 4th, 2026
Article ID: 1964022

Summary

No. The Plugable USBC-MSTH2 Dual HDMI MST Adapter is USB-C bus-powered, meaning it draws the power needed to operate directly from the computer's USB-C port.

An external power supply is not included or required.

Applicable To

  • Plugable USB-C Dual HDMI MST Adapter (USBC-MSTH2)

Important Notes

  • The adapter draws power from the connected computer, which may slightly increase battery consumption when the computer is not plugged into a charger.
  • The adapter requires a USB-C port that supports DisplayPort Alternate Mode (DP Alt Mode) for video output.
  • The USBC-MSTH2 does not provide Power Delivery charging to the connected computer.

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

Need Assistance?

If you're unsure which version of the UD-3900 you have or need help connecting your monitors, please contact Plugable Support at support@plugable.com.