1. Web
  2. Web APIs
  3. USBOutTransferResult

USBOutTransferResult

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 USBOutTransferResult interface of the WebUSB API provides the result from a call to the transferOut() and controlTransferOut() methods of the USBDevice interface. It represents the result from requesting a transfer of data from the USB host to the USB device.

Constructor

USBOutTransferResult()

Creates a new USBOutTransferResult object with the provided status and bytesWritten fields.

Instance properties

USBOutTransferResult.bytesWritten Read only

Returns the number of bytes from the transfer request that were sent to the device.

USBOutTransferResult.status Read only

Returns the status of the transfer request, one of:

  • "ok" - The transfer was successful.
  • "stall" - The device indicated an error by generating a stall condition on the endpoint. A stall on a bulk or interrupt endpoint must be cleared by calling clearHalt() before transferOut() can be called again.

Specifications

Specification
WebUSB API
# usbouttransferresult

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
USBOutTransferResult
Experimental
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – No support
WebView Android
footnote
footnote WebView exposes this interface, but does not support WebUSB. See bug 41441927.
WebView on iOS – No support
WebView on iOS
footnote No support
USBOutTransferResult() constructor
Experimental
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
bytesWritten
Experimental
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
status
Experimental
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Available in workers
Experimental
Chrome – Partial support
Chrome 70 – 117 (Release date: 2018-10-16)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Chrome – Partial support
Chrome 118 (Release date: 2023-10-10)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Edge – Partial support
Edge 79 – 117 (Release date: 2020-01-15)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Edge – Partial support
Edge 118 (Release date: 2023-10-13)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Firefox – No support
Firefox
footnote No support
Opera – Partial support
Opera 57 – 103 (Release date: 2018-11-28)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Opera – Partial support
Opera 104 (Release date: 2023-10-23)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Safari – No support
Safari
footnote No support
Chrome Android – Partial support
Chrome Android 70 – 117 (Release date: 2018-10-17)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Chrome Android – Partial support
Chrome Android 118 (Release date: 2023-10-10)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Partial support
Opera Android 49 – 78 (Release date: 2018-12-07)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Opera Android – Partial support
Opera Android 79 (Release date: 2023-12-06)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Partial support
Samsung Internet 10 – 24 (Release date: 2019-08-22)
footnote Partial support
footnote Available in dedicated workers, not available in shared workers and service workers.
Samsung Internet – Partial support
Samsung Internet 25 (Release date: 2024-04-24)
footnote Partial support
footnote Available in dedicated workers and WebExtension service workers, not available in shared workers and normal service workers.
WebView Android – No support
WebView Android
footnote
footnote WebView exposes this interface, but does not support WebUSB.
footnote See bug 41441927
WebView on iOS – No support
WebView on iOS
footnote No support

Tip: you can click/tap on a cell for more information.

Full support
Partial support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.
Has more compatibility info.

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