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Ethernet Adapter diagnostics

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

Use network connectivity and HTTP round-trip evidence after confirming the operating system sees a wired link.

Run these first

Relevant live checks

Browser Online Status TestCheck the browser online state, available connection hints, and a short round trip to DeviceOK.
→
Browser Latency TestMeasure several browser-to-DeviceOK request round trips as a quick connection responsiveness check.
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First diagnostic sequence

Do the high-signal checks before risky changes

  1. 1

    Check OS link status

  2. 2

    Try another known-good cable/port

  3. 3

    Compare Wi-Fi vs Ethernet

What DeviceOK/browser can help check
  • Confirm web connectivity through the current network path
  • Measure application-level round trips
What this browser page cannot prove
  • Read cable-pair faults
  • Measure link negotiation universally
  • Replace switch/router diagnostics