After a few days of messing with this I stumbled on this helpful information at Discussions Apple.com Based on the information in that discussion I was able to get USB working on my Beige G3 300mhz desktop with the ADS Tech card.
Install OS 9.2.2 then use software called TomeViewer to extract...
Sorry for the necro-post but I have this card in my G3 300 Beige desktop and I can not get it to be seen by system profiler. I did a fresh install of 9.2.2. Any pointers would be greatly appreciated.