I'm not looking for anything internal nothing will fit. I have an old PowerMac 9500 upgraded to a G4 450Mhz. Using MacOS 10.2.6 by means of XPostFacto. So my FireWire compatibility is done through a PCI card which means nothing internal. Plus I have no bays left :-). I am mainly looking for a DVDRW drive to put on this machine that is external firewire. CJ