Serialized NDIS Miniport Drivers
Serialized NDIS miniport drivers are obsolete for Windows Vista and later versions. Serialized miniport drivers are not supported for NDIS 6.0 drivers. Windows Vista supports serialized miniport drivers only for NDIS 5.1 and earlier drivers. Unlike deserialized miniport drivers, a serialized miniport driver relies on NDIS to serialize the operation of its own MiniportXxx functions and to manage the queue for sending network data packets.
If you are writing a new miniport driver, you should write a deserialized driver. If possible, you should also port older drivers to NDIS 6.0 or later. For more information about porting drivers to NDIS 6.0, see Porting NDIS 5.x Drivers to NDIS 6.0.