I have recently installed the ND-2500 into my Powermac G4 Tower. Unfortunately, I do not believe the firmware is updated enough to support burning. I have searched for firmware for this burner for Macs but have been unsuccessful. However, I have seen members of cdfreaks who have the same system as me and have a working ND-2500 in their systems.
If anyone can help me find firmware, the karma would be tremendous.