public static extern Int32 SetupDiGetDeviceInstanceId(IntPtr DeviceInfoSet, ref SP_DEVINFO_DATA DeviceInfoData, StringBuilder DeviceInstanceId, Int32 DeviceInstanceIdSize, ref Int32 RequiredSize);
public static extern Int32 SetupDiEnumDeviceInfo(IntPtr DeviceInfoSet, Int32 MemberIndex, ref SP_DEVINFO_DATA DeviceInterfaceData);