Alan, You can save a bit by sidestepping the external enclosure and putting that putting that second drive inside the G4. All of my G4s have two internal drives. Dale On Feb 13, 2013, at 1:14 PM, Alan Oltman wrote: > I have a G4 running os 9 I have a large internal drive and a large external drive for my Pro Tools sessions. The ext drive works great but is full (an Acomdata s/n 0842309). The other drives I have tried via the fire wire or USB are extremely slow. I can't find any info on line or at the Mac store. Can anyone help?