WebUSB Device Test
Check whether a supported browser can request direct permission to a compatible USB device.
Advanced hardware access
This advanced test only works in browsers that expose the required hardware API.
DeviceOK requests access only after you click. Advanced browser hardware APIs are permission-gated and are not universally supported.
What happened?Choose the result you observed.
Privacy: The browser chooser controls access; DeviceOK does not upload device data.
What this test tells you
This test checks
- WebUSB support
- USB device selection
- Browser-exposed USB identity
How to read the result
Many ordinary USB devices are claimed by operating-system drivers and are not available through WebUSB.
Not appearing in WebUSB does not mean the USB hardware is broken.