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()

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.

Events

connect

Fired whenever a previously paired device is connected.

disconnect

Fired whenever a paired device is disconnected.

Specifications

Specification
WebUSB API
# usb

Browser compatibility

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