That drive should work for you. There are no drivers, aside from the OS X native drivers. There are some older CD drives that just can't work with a newer system, but I don't know if the CR-587 would be one of those.
Pioneer DVD (DVR-107D) is configured as the MAster and the
Matshita is the slave.
Shouldn't both drawers just open simultaneously when hitting the eject button?
The machine recognizes the drive in Apple Profiler. I asssume it needs a driver to
suppoort it as Tiger may not include a compatible driver. Any ideas?
'Shouldn't both drawers just open simultaneously when hitting the eject button?', no.
Use 'Ardiem' to configure a key to open and close the CD-587's tray.
With or without 'Ardiem', open the (now configured as a 'slave') CD-587's tray, insert a CD, and close the tray - does the CD's icon on the 'Desktop'? If not, try the test below.
You still have not listed specifically which PowerMac G4 model you have.
As a test ...
Turn OFF the PowerMac G4.
Remove the DVD (DVR-107D) and place it aside.
Remove the Matshita CR-587 and configure it as a 'master'.
Insert the CR-587 into the upper bay (where the DVR-107D originally was)
Turn ON the PowerMac G4.
Place a CD into the CR-587's tray and close.
If the CD is recognized and its inserted CD's contents viewable, then you confirmed your PowerMac G4 only allows a removable media device (CDROM, CD burner, DVDROM, DVD burner, etc.) as a 'master' only.
Also jdd1 I am going to suggest something you can use when you want to add any hardware to your Mac. There is a web site that has a database of many user adventures for Mac hardware upgrades from around the world. The web site is Accelerate Your Mac and if you look at their menu there is the "database" tab. The one database choice is for their Drive Compatibility. If you just plug into your information you can view those reports that also have hints and tricks amended to most every report. It is a real good database for hardware upgrades.