Device item

#define HWI_TAG_NAME_device     "Device"
#define HWI_TAG_ALIGN_device    (sizeof(uint32))
struct hwi_device {
    struct hwi_item     item;
    uint32_t            pnpid;
};

The Device item tells the system about an individual device (the device level from the "Trees" section — the devclass level is done with a "Group" tag). The pnpid field is the Plug and Play device identifier assigned by Microsoft.