What is b43?

B43 is a Linux kernel driver for supporting Broadcom 802.11n wireless network adapters. It is an open source driver developed by the Linux community and supports various Broadcom wireless chipsets including BCM4311, BCM4312, BCM4313, BCM4321, BCM4322, BCM43224, BCM43225, and BCM43227. The b43 driver is actively maintained and updated to support the latest Linux kernels and Broadcom chipsets. It is included in most Linux distributions and can be installed through the package manager. The b43 driver is often used on older laptops and desktops that have Broadcom wireless adapters.