Broadcom 802.11b Windows Driver:

The Broadcom 802.11b driver refers to software that enables your Windows computer to communicate with a Broadcom 802.11b wireless network adapter. The 802.11b standard is one of the early wireless networking standards, part of the IEEE 802.11 family, which defines the protocols for wireless communication in local area networks (Wi-Fi). While 802.11b was widely used in the early 2000s, it is now considered outdated compared to faster standards like 802.11g, 802.11n, and 802.11ac.