2012/10/11 Peter Stuge <peter@xxxxxxxx>: > Elric Fu wrote: >> It is a usb 1.1 device and works at full speed. > > It is a frequent misunderstanding that a device must be 1.1 only > because it does not support high speed. This is not the case. > > >> But the interesting thing is the bcdUSB field of device descriptor >> is 0x0200. > > It is perfectly legal for a USB 2.0 device to only support low or > full speed. > > > I'm not sure what the problem is with this host or device, just > mentioning that a device can be USB 2.0 and only support lower > speeds. > > It amazes me how many people reduce USB 2.0 to mean high speed. > The standard took several years to develop, and it contains a lot > more than the added high speed communication. > I see. Thanks a lot. > > //Peter -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
