FIELD GUIDESource-led reference
Port & Cable

setup

ChromeOS and UD-MSTHDC: one output from each group

Plugable’s UD-MSTHDC is an exact Works With Chromebook product context. It uses two output groups; connect one display to each group, not two sockets in one group.

Applies to: Exact UD-MSTHDC on a ChromeOS host with documented USB-C DP Alt Mode/PD or qualifying Thunderbolt port. Host GPU/mode limits still apply; no ChromeOS runtime exercised.

video
ChromeOS host USB-C DP Alt Mode → UD-MSTHDC → Display 1 group + Display 2 group
data
Host USB data ↔ dock peripheral ports.
power
Dock supply → up-to-60W host PD, subject to host support.
Functional path diagram. Arrows show the stated role and direction; they do not report an observed connection.

What the path requires

  • Verify the exact Chromebook host port and display capacity.
  • Use supplied upstream USB-C cable and one output from each named group.
  • Match the complete mode to host/dock/monitor evidence; dual 4K60 is conditional.

Certification does not remove host limits

The manufacturer lists ChromeOS/Windows support and excludes macOS for this dock. Its MST topology and host display budget remain separate from the number of output sockets.

Plugable UD-MSTHDC — Certified Works With Chromebook dock

Worked documentary examples

Two displays plugged into Display 1

Documented outcome: Documented port-group conflict

  • Both physical sockets in one alternative-output group used.
  1. Use one output from Display 1 and one from Display 2.
  2. If still missing, inspect exact host capacity and requested mode.
Plugable UD-MSTHDC — Certified Works With Chromebook dock

Your next useful observation

Record Chromebook model, port capability, group used for each display and the actual offered modes.

Keep these limits

  • Official-source product case, not physical Chromebook acceptance.
  • No exact unnamed Chromebook/display combination is asserted.
Source documents, revisions and inspection methods

Plugable UD-MSTHDC — Certified Works With Chromebook dock

Plugable · Live product revision not stated

Compatibility; setup steps 6–9; WWCB features

Inspected 2026-10-23 by public_page. Primary HTML body and relevant table inspected; AI-assisted source reading, no independent human review or hardware validation.

Exact dock port groups, ChromeOS/Windows prerequisites and macOS exclusion.

Read the original source

Source-documented education. Hardware behavior and independent human review have not been performed for these examples.

Draft a correction · More connection lessons