hardware test
Serial Adapter USB ID Check
Use this to identify which USB-to-serial adapter or serial-connected device you selected.
No accountLocal where possibleRetest anytime
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.
Private by design
Identifiers remain local.
Use the result as evidence, not a guess.
This test checks
- Serial port selection
- USB vendor/product IDs where exposed
How to read it
Some native or Bluetooth serial ports will not expose USB IDs.
An absent ID is not itself a failure.