Web/API/USB

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 USB interface of the WebUSB API provides attributes and methods for finding and connecting USB devices from a web page.

Properties

None.

Event handlers

USB.onconnect

An event handler called whenever a previously paired device is connected.

USB.ondisconnect

An event handler called whenever a paired device is disconnected.

Methods

USB.getDevices()

Returns a Promise that resolves with an array of USBDevice objects for paired attached devices.

USB.requestDevice()

Returns a Promise that resolves with an instance of USBDevice if the specified device is found. Calling this function triggers the user agent's pairing flow.

Specifications

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

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

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
USB 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
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
onconnect 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
ondisconnect 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
requestDevice 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 by Mozilla Contributors is licensed under CC-BY-SA 2.5.