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USB

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Secure context: This 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.

Use navigator.usb to get access to the USB object.

The USB interface inherits from EventTarget.

EventTarget USB

Instance properties

None.

Instance methods

USB.getDevices() Experimental

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

USB.requestDevice() Experimental

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.

Events

connect Experimental

Fired whenever a previously paired device is connected.

disconnect Experimental

Fired whenever a paired device is disconnected.

Specifications

Specification
WebUSB API
# usb

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
USB 61 79 No No 48 No
NoWebView exposes this interface, but does not support WebUSB. See Chromium bug 933055.
61 No 45 No 8.0
connect_event 61 79 No No 48 No No 61 No 45 No 8.0
disconnect_event 61 79 No No 48 No No 61 No 45 No 8.0
getDevices 61 79 No No 48 No No 61 No 45 No 8.0
requestDevice 61 79 No No 48 No No 61 No 45 No 8.0

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https://developer.mozilla.org/en-US/docs/Web/API/USB