GX620 onboard Ethernet
To get on-board ethernet working
Head to this post to get the .kext - http://forum.insanelymac.com/index.php?s=&showtopic=4987&view=findpost&p=129533
Instructions:
@Gellius31: try the following instructions
1. unpack AppleBCM5751Ethernet.kext.zip
2. move AppleBCM5751Ethernet.kext to /System/Library/Extensions/
3. open Terminal
4. sudo -s
5. chown -R root:wheel /System/Library/Extensions/
6. cd /System/Library/Extensions/
7. chmod -R 755 AppleBCM5751Ethernet.kext
8. reboot
9. You will have MAC address of 00:00:00:00:00:00. Boot with ubuntu live cd, get MAC address of your NIC using ifconfig utility at terminal. Write it down.
10. Reboot to OS X, open terminal and set your MAC address manually:
sudo -s
Note: ethernet must be disconnected before trying the following command
ifconfig en0 ether <your mac address here>
Network should now be working!


