Web/API/USB/getDevices

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

Secure contextThis feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The getDevices method of the USB interface returns a Promise that resolves with an array of USBDevice objects for paired attached devices. For information on pairing devices, see USB.requestDevice().

Syntax

USB.getDevices()

Parameters

None.

Return value

A Promise that resolves with an array of USBDevice objects.

Example

The following example logs the product name and serial number of paired devices to the console. For information on pairing devices, see USB.requestDevice().

navigator.usb.getDevices()
.then(devices => {
  console.log("Total devices: " + devices.length);
  devices.forEach(device => {
    console.log("Product name: " + device.productName + ", serial number " + device.serialNumber);
  });
});

Specifications

Specification	Status	Comment
WebUSBThe definition of 'getDevices' in that specification.	Draft	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`getDevices` Experimental'	Chrome Full support 61	Edge Full support 79	Firefox No support No	IE No support No	Opera Full support 48	Safari No support No	WebView Android No support No	Chrome Android Full support 61	Firefox Android No support No	Opera Android Full support 45	Safari iOS No support No	Samsung Internet Android Full support 8.0

Legend

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.': Experimental. Expect behavior to change in the future.

USB.getDevices() by Mozilla Contributors is licensed under CC-BY-SA 2.5.