Keyboard & Mouse Tester
Disclaimer
Please read these limitations before relying on the results shown by Keyboard & Mouse Tester.
Last updated: September 22, 2026
Informational results only
Test results are provided for general informational and troubleshooting purposes. They are not a professional hardware diagnosis, warranty assessment, or certification of device performance.
Browser and operating-system limitations
Browsers and operating systems may intercept, modify, combine, or suppress input events. System shortcuts such as Alt + Tab, the Windows key, Ctrl + Alt + Delete, and Print Screen may not be fully detectable or preventable by a web page.
Polling-rate estimates
Mouse polling-rate values are estimates based on events delivered to the browser. They can be affected by event coalescing, display refresh rate, system load, power settings, drivers, and browser behavior.
No warranty
The tool is provided on an “as is” and “as available” basis without warranties of accuracy, availability, fitness for a particular purpose, or uninterrupted operation.
Limitation of responsibility
To the extent permitted by applicable law, the site owner is not responsible for decisions, repair costs, data loss, or other damages arising from reliance on test results. Confirm suspected hardware problems with the manufacturer or a qualified technician.