1. Use DCPIManager to confirm your wifi board is working, and to identify your chip version
2. Use this table to choose your Atheros card id string:
pci168c,2a AR9281
pci168c,24 AR5418/5133
pci168c,2a AR9280
pci168c,30 AR9380
pci168c,34 AR94621
pci168c,2a AR9283...