What? You found an 11b/11g card that works in OS 9? As far as I know, the Agere/Avaya/Lucent/Orinoco/WhoeverTheyAreToday chipset is 11b only. Apple moved to a Broadcom chipset for 11g/AirPort Extreme that works in OS X. The old 11b AirPort card is keyed as CardBus but it doesn't have the ground plane connection that most other CardBus cards have, and I'm not convinced it's genuinely CardBus electronically.

 

I'm very interested in this as I've been a bit of an AirPort hacker since way back in the OS 9 days (I wrote ClassicStumbler). I never found an OEM card (where did you get it?), but I do have a Sony Vaio card which is a clone of the AirPort/OEM Orinoco card with a stubby tile antenna tacked on the end.

 

Peace,

Drew