The Broadcom 802.11ac Network Adapter driver is a software package that enables your Windows operating system to communicate with a Broadcom wireless network card (Wi-Fi adapter) that supports the 802.11ac Wi-Fi standard. The 802.11ac standard is part of the Wi-Fi 5 generation, offering faster speeds and better performance in environments with many devices or large amounts of data being transmitted over the wireless network.

The driver is required for the network adapter to function correctly, allowing your laptop or desktop to connect to Wi-Fi networks.