GNU/Linux KDE Neon Installing Broadcom BCM43227/BCM43228 Driver Guide
The linked tutorial shows you step-by-step How to Install Broadcom BCM43227/BCM43228 Wi-fi/Bluetooth Driver on KDE Neon LTS GNU/Linux desktop – Step by step Tutorial.
The Package Provides the Source Code for the wl Kernel Modules and makes use of the DKMS Build Utility to Install them for the Running Kernel.

GNU/Linux KDE Neon Broadcom BCM43227/BCM43228 Driver Installation Guide