This structure is often nested inside the USB_HUB_INFORMATION structure, hence the need for the "pack=1"

struct USB_HUB_INFORMATION

Structure USB_HUB_INFORMATION

typedef struct _USB_HUB_INFORMATION {

} USB_HUB_INFORMATION, *PUSB_HUB_INFORMATION;

   public USB_HUB_INFORMATION HubInformation;      // Yeah, I'm assuming we'll just use the first form

   public USB_HUB_INFORMATION HubInformation;

     USB_HUB_INFORMATION  HubInformation;