Or check QVS they have a adapter for USB/ADB also have a compatibility list of what works what won't and or contact them for a check. From the looks of it USB/ADB conversion is easier to do that PCI /ADB.. Keyspan does make a serial (mac Mini Din8 PCI card) but that won't be much use for what you want. Sesco makes a USB/ADB for the Imac not sure if it will work with a G4 but I would think it would may not work with OS X though. The there is the Idock wonder what you could do with one of those! Have you looked at the GDock-2 ? It's only $300.00 gionpeters at comcast.net wrote: Speaking of ADB/USB adapters, I would really like to be able to use an older Apple keybpard (Extended Keyboard2) on my new Mirrored Door Dual G4 mac. I tried a Griffin adapter, but it did not work. Is there any sort of PCI card available that adds ADB ports ? thanks, Mad Dog _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus