The DEV_BROADCAST_OEM structure contains information about a OEM-defined device type.
typedef struct _DEV_BROADCAST_OEM {
ULONG dbco_size;
ULONG dbco_devicetype;
ULONG dbco_reserved;
ULONG dbco_identifier;
ULONG dbco_suppfunc;
} DEV_BROADCAST_OEM;
typedef DEV_BROADCAST_OEM *PDEV_BROADCAST_OEM;