4dapter Diagnostics

Raw device inspection tools for troubleshooting — not needed for normal flashing. Head back to the flasher for that.

Gamepad API

What a game or emulator actually sees — Chrome only recognizes known controller descriptors, so this can show "no gamepad" even when the device is enumerating correctly. Press any button on the device to make the browser notice it.

WebHID

Shows the exact vendor/product ID and HID report structure the device reports, regardless of whether Chrome's gamepad code recognizes it as a gamepad at all — the device picker is deliberately unfiltered so you see whatever's actually there, even if it's not what you expected.