Just a note - you will not be able to use USB 2.0 with OS 9, which has no support for that faster USB. Reading CDs is no indication that burning can work. Even if you can use burning, you will be restricted to a maximum of 4X, and more likely 2X, despite the capabilities of your burner. Even that could be unreliable. toast 5 hasn't been updated for a couple of years, so your newer burner is probably not supported even with Toast. Best bet is to upgrade to Panther, or take this burner back, and see if you can trade it for a FireWire burner (a much better choice than USB for OS 9)