These are the driver files found on CompuCable's website as archived
by The Internet Archive.

Download #1: USB-ADB Installer V1.2.2.hqx (pre 1.3 version).
Download #2: mini-ADB Installer 1.3.1.hqx
Description:
(For mini-ADB v1.3 and iDock-2 v1.03 only. Please check the back of
your mini-ADB device for current firmware version 1.3) If your iDock-2
comes with the iDock 1.0.3 CD, you can use this ADB driver.
Download #3: USB-ADB Installer V1.6.sit_.hqx
Description:
Works with:
\--Mini-ADB v1.5 (version number is found in the back of the Mini-ADB)
\--GDock-2
\--QDock v1.5 (version number is found on the bottom of the QDock

Compatibility
Architecture: PPC PPC (Carbonized)