IOCTL_USB_GET_NODE_CONNECTION_ATTRIBUTES
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/buses_d/hh/Buses_d/usbirp_7240de27-e12b-4c72-94c3-5913a217c0c3.xml.asp
USB_NODE_CONNECTION_ATTRIBUTES
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/buses_d/hh/Buses_d/usbstrct_20423110-ee37-4637-8202-e712bb13d43b.xml.asp
On these pages is mentioned “Extended Port Attribute Specification”. What is
this? And where one can find it?