Experimental
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The usbVersionMajor read only property of the
USBDevice interface is one of three properties that declare the USB
protocol version supported by the device. The other two properties
are USBDevice.usbVersionMinor and USBDevice.usbVersionSubminor.
Syntax
var serialNumber = USBDevice.usbVersionMajorValue
The last of three properties that declare the USB protocol version supported by the device.
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebUSB The definition of 'usbVersionMajor' in that specification. |
Draft | Initial definition. |
Browser compatibility
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