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b43 and b43legacy are wireless drivers for Broadcom SoftMAC chipsets. Kernel will automatically pick a proper module for you: * b43 for any new (supported) hardware * b43legacy for BCM4301 and early BCM4306 versions
* You need to have firmware files (usually in /lib/firmware/) so
b43(legacy) can upload them to the card and run properly.
To check for a present hardware model execute following command:
lspci -nn -d 14e4:
Please look carefully at device ID and chipset name.