The cards in my PowerBook and PowerMac G5 aren't the same. I had an A1026 Airport Extreme in PowerBook and A1027 Airport Extreme in PowerMac G5. I've swapped them and the result was working WiFi in PowerBook (with A1027) and hanging prefs in PowerMac (with A1026). Is it possible that only one of those is supported by MorphOS ATM? Isn't that the same card (the same Broadcom chipset) with the difference being just some additional, euro-asian channels in A1027?