From: Xiaofan C. <xia...@gm...> - 2010-08-18 23:55:47
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On Thu, Aug 19, 2010 at 7:48 AM, quile <ql...@ex...> wrote: > > I'm using libusbdotnet with libusb-1.0 windows backend. > > I have a setup that have multiple devices with the same "everything" for > their own purpose: VID, PID, Serial Number connected to the same machine and > I want to distinguish these devices apart using bus number and device > address while they are being used and hot plugged. I was just curious what > the "5&14223e91" part mean since I didn't see it in libusb-1.0 API. Thanks > for the info. Does the device has valid serial number? If yes, then they need to be unique. If not, you may encounter unexpected results under Windows, including BSODs. http://blogs.msdn.com/b/oldnewthing/archive/2004/11/10/255047.aspx Also for some class of USB device, like the USB mass storage device, the serial number is needed by the spec. If your device has no serial number, then that is another thing. -- Xiaofan |