So far, on my Wallstreet PDQ, a Sony PCWA C150 (not S version) is recognized and works on macOS 9.2.1 through Airport utility. The utility shows all nearby hotspots. It is an 802.11b card with up to WEP encryption I believe.
I also got a “hide away” 2 USB port PC Card that works with it, on macOS 9.2.1 and 10.1. Logitech wireless mouse works normally with Mouseware installed.
On my 550c, I got the PCWA C150 recognized on macOS 8.6, but requires drivers, so it does not work. But at least it is recognized. Also got a Memorex PC Card compact flash adapter that works well on the 550c, even on macOS 8.1. Haven’t tried it on my Wallstreet, but I don’t think there would be any problem.