Controller and input
Controller & input diagnosis
Start with the behavior you notice. The recommendations inspect browser-visible events and mappings, not raw USB traffic or electrical switch behavior.
Choose the closest symptom
Choose what you can directly see or notice. You can change the selection at any time.
Select a symptom
The guide will explain which specialist test is relevant and what that browser test can—and cannot—show.
No automatic diagnosis. Browser events can narrow a problem down, but they cannot provide universal hardware health, raw USB polling, end-to-end controller latency, firmware diagnosis, or factory calibration.