NetAdapterCx version overview

This section highlights new features for the Network Adapter WDF Class Extension (NetAdapterCx) driver model. Use the following topics to learn more about the changes in each version of NetAdapterCx.

The current version of NetAdapterCx is 2.5.

KMDF NetAdapaterCx

The following table describes Windows OS support for KMDF NetAdapterCx versions.

Operating system	KMDF version	Supported NetAdapterCx version	Version notes
Windows 11, version 24H2	1.33	2.5	Supports NetAdapterCx (Ethernet), MBBCx (Mobile Broadband), and WiFiCx (Wi-Fi).
Windows Server 2022 23H2	1.33	2.4	Supports NetAdapterCx (Ethernet), MBBCx (Mobile Broadband), and WiFiCx (Wi-Fi).
Windows 11, version 22H2	1.33	2.3	Supports NetAdapterCx (Ethernet), MBBCx (Mobile Broadband), and WiFiCx (Wi-Fi).
Windows 11, version 21H2	1.33	2.2	Supports NetAdapterCx (Ethernet), MBBCx (Mobile Broadband), and WiFiCx (Wi-Fi).
Windows 10, version 2004	1.31	2.0	Initial release. Supports NetAdapterCx (Ethernet) and MBBCx (Mobile Broadband).

UMDF NetAdapaterCx

The following table describes Windows OS support for UMDF NetAdapterCx versions.

Operating system	UMDF version	Supported NetAdapterCx version	Version notes
Windows 11, version 24H2	2.33	2.5	Supports User-mode NetAdapterCx (Ethernet).

Important

NetAdapterCx client drivers written in previous versions will not work in the latest version of Windows until they are retargeted to the current version.