Overview
The Connected Devices test shows what connected hardware your browser can detect through various Web APIs. It queries seven different device APIs including Gamepad, MIDI, Media Devices, WebHID, WebUSB, Web Bluetooth, and Web Serial to give you a unified view of all discoverable peripherals.
Some APIs like Gamepad and MIDI can automatically detect devices without requiring special permissions. Others like WebHID, WebUSB, Web Bluetooth, and Web Serial follow a permission-gated model where you must explicitly select a device from the browser picker before the site can see it.
This tool is particularly useful for troubleshooting device connectivity issues. If a web application like VIA (keyboard configurator) cannot find your device, you can use this test to verify whether the browser can detect it at all through the relevant API.
More Info
Related Guides
USB Device Not Recognized
How to fix a USB device that is not detected or keeps disconnecting. Covers driver issues, power settings, port problems, and USB hub troubleshooting.
Bluetooth Pairing and Troubleshooting
How to pair Bluetooth devices, fix failed connections, and troubleshoot common pairing issues. Covers headphones, keyboards, mice, and speakers on any OS.