进入Mac OS X,打开finder -> system -> library -> extensions, 文件解压后,将AppleBCM5751Ethernet.kext放到extensions目录里,执行以下命令:
1. open Terminal
2. sudo -s
3. chown -R root:wheel /System/Library/Extensions/
4. chmod -R 755 /System/Library/Extensions/AppleBCM5751Ethernet.kext
5. reboot
重启后就系统可识别出BROADCOM网卡。