It does this whether it is hooked up to a computer or not. If I plug it into power and insert a zip disk, it makes noise. I thought that it was just a matter of it not being connected to a computer, but it does the same thing when it's connected to my SE running 6.0.5 or 6.0.7. I'm not using multifinder, not booting off of the zip, and not even running any apps.

The zip seems to work otherwise. It's able to read and write the media.