Thank you for your replies! I know that the card works under OS X. I'm in fact using an AR5B195 card right now. My question is about the Laptop itself. Is there any whitelist on this laptop? I went to Dell's website and E6430 support section did not seem to have any Atheros drivers, just Broadcom (the Broadcom chip the drivers are intended for isn't compatible with OS X). So, I'm afraid the card will be rejected by the bios.