What level of the USB specification is supported?
The USB 1.1 specification is the latest supported by the current javax.usb API. However, USB 2.0 devices should work with javax.usb since control of the device speed is done by the OS, not javax.usb. Since the USB 2.0 specification is not supported yet by javax.usb, any USB 2.0 constants or structures/descriptors are missing from the javax.usb API. For example, UsbDevice.getSpeed() will return UsbConst.DEVICE_SPEED_UNKNOWN since there is no javax.usb API constant for highspeed, until the USB 2.0 specification support is added. • Where can I get the USB specification? The USB specification is available from usb.org. They should be downloadable from the Documents page. The specfication you should get for now is the USB 1.1 specification, although the USB 2.0 specification is the latest. Note that the current javax.usb API does not support the USB 2.0 specification. • Can I use HID devices with javax.usb? HID is a protocol layered on top of USB, so you can use any HID device with javax.us
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