USB

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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.

Note: This feature is available in Web Workers.

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.

Instance properties

None.

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.

connect Experimental: Fired whenever a previously paired device is connected.
disconnect Experimental: Fired whenever a paired device is disconnected.

Specification
WebUSB API # usb

This page was last modified on ⁨Oct 8, 2024⁩ by MDN contributors.