I am trying to download the network interface card driver manually. It is Realtek PCIe GBE Family controller.

After a Google search, I landed on the official download list.

This software supports a lot of Realtek products. From GBE or Gigabit ethernet to 5G Gigabit ethernet card.

I am using Windows 11. So, I focused on the windows section.

There are NDIS and NetAdapterCX. Two different types of drivers. I don’t know which one is good for my Windows installation.

I did my research. Got the answer as below:

NDIS (Network Driver Interface Specification):

  • Is the older, traditional method for writing network drivers in Windows.
  • Requires client drivers to handle complex tasks like data path synchronization, PnP, and power management.
  • Client drivers run with elevated privileges, which can lead to system instability.

NetAdapterCx (Network Adapter WDF Class Extension):

  • Is a newer, WDF-based approach to writing network drivers, introduced in Windows 10, version 1703.
  • Simplifies driver development by abstracting complex tasks and making them easier for non-NDIS developers.
  • Takes over the responsibility of synchronizing power and PnP events, as well as data and control path I/O.
  • Uses a polling-based I/O model to improve driver reliability and graceful handling of errors.
  • The client driver interacts with NetAdapterCx, which acts as a bridge to traditional NDIS.
  • NetAdapterCx uses a ring buffer of NET_PACKETs, which map to NDIS NET_BUFFER_LIST and NET_BUFFER.
  • A NET_PACKET is similar to a NET_BUFFER_LIST + NET_BUFFER, and a NET_PACKET_FRAGMENT is similar to a memory descriptor list (MDL).

Benefits of NetAdapterCx:

  • Improved driver reliability and stability.
  • Easier driver development for non-NDIS developers.
  • Better performance and resource utilization.
  • A simpler driver model.

Now, I decided to download the NetAdapterCX driver.

I feel it is installing all these versions of drivers during the installation.

1124.022 , 1125.022 , 1126.022 , 1166.022 , 1168.022 and also10.74

The system will pick up the best one when need it.

David Yin

David is a blogger, geek, and web developer — founder of FreeInOutBoard.com. If you like his post, you can say thank you here

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