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Home / Device types / USB Hub / Dock
USB Hub / Dock diagnostics

Test what the browser can see. Know when it cannot.

Diagnose a hub or dock by testing the downstream device paths individually and separating power, cable, port and display/network functions.

Run these first

Relevant live checks

Webcam TestOpen your webcam locally to verify that the browser can access and display a live camera stream.
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Microphone TestCheck whether your browser can detect your microphone and receive live audio.
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Keyboard TestPress keys and verify that the browser receives the expected keyboard events.
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Mouse Button TestVerify left, right, middle, and extra mouse button events.
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WebUSB Device TestRequest a compatible USB device through WebUSB and display the browser-exposed manufacturer, product, vendor, and product IDs.
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First diagnostic sequence

Do the high-signal checks before risky changes

  1. 1

    Test one downstream device at a time

  2. 2

    Connect the dock's required power supply

  3. 3

    Compare the same peripheral directly to the computer

What DeviceOK/browser can help check
  • Test many downstream peripherals independently
  • Show whether individual browser-level devices work through the dock
What this browser page cannot prove
  • Measure dock power delivery
  • Read Thunderbolt link health
  • Inspect USB controller topology universally