If you have installed a modern operating system on an old laptop, Windows Update will often fail to find the correct driver automatically for this specific card. You have two primary options:

Note: If this does not work, some users have better luck with the bcmwl-kernel-source package, though this is less common for the 4313 revision.

The computer sat in the corner of Leo’s cramped apartment like a guilty secret. It was a hackintosh—a beautiful lie of aluminum and silicon pretending to be something it wasn’t. For six months, it had worked perfectly. Then came the macOS update.