Has PC card slots that are CardBus compliant after a patch. Could that help?
https://web.archive.org/web/20071114043632/http://www.wallawalla.edu:80/frohro/Cardbus/Cardbus.html
Could not find any suggestions online- my Mac is currently stock. Wanting a stable OS with good performance. No plans to take it online.
If there is a good reason for me to upgrade RAM etc that isn't expensive I'd be willing