Wi-Fi drivers

What does a wi-fi driver do?

A Wi-Fi adapter driver binds the physical radio silicon to the Network Driver Interface Specification, the NDIS layer that Windows uses to move Ethernet-style frames to and from wireless hardware. Your wireless network interface card is usually an M.2 2230 module on the CInvNGFF key-A/E slot, or a radio soldered next to the chipset, and the driver exposes its transmit and receive queues to the operating system. Above NDIS sits the Native Wi-Fi (Wlansvc) service, which the driver feeds with scan lists, association state, and signal quality readings.

One of the driver's core jobs is band and channel management. It reports which channels the radio may use under your regulatory region, decides when to steer a session from a congested 2.4GHz channel to a cleaner 5GHz one, and on Wi-Fi 6E hardware it unlocks the 6GHz band where local rules permit. It also negotiates channel bonding, so two adjacent 20MHz channels combine into 40MHz, 80MHz, or 160MHz for higher throughput.

Read the full wi-fi adapter driver explainer

Compatibility is model-specific

A driver is associated with hardware identifiers, an operating-system driver model, and a processor architecture. Devices in the same category can expose different controllers, firmware interfaces, and optional feature layers, so a category name alone does not establish package compatibility.

Where this driver fits in Windows

The wi-fi adapter driver sits between Windows, the applications you use, and the physical hardware. This layered view shows where the driver translates operating-system requests into device actions.