from ux_api.h:1959
typedef struct UX_CONFIGURATION_DESCRIPTOR_STRUCT
{
ULONG bLength;
ULONG bDescriptorType;
ULONG wTotalLength;
ULONG bNumInterfaces;
ULONG bConfigurationValue;
ULONG iConfiguration;
ULONG bmAttributes;
ULONG MaxPower;
} UX_CONFIGURATION_DESCRIPTOR;