Driver for Zio USB Compact Flash Card Reader

I'm looking for a driver for a Zio Compact Flash Card Reader.

http://www.dpreview.com/news/0006/00062707microtechzio.asp

This reader works on my 17 inch PowerBook but not on my 12 inch.

The only driver I could find is OS 9.

Photoscene

PowerBook G4 17 inch, PowerBook G4 12 inch Mac OS X (10.4.7) Tiger/Panther