An optical disc of Adaptec USBXchange. Because Apple never released a
computer that has both SCSI and USB, this allows a SCSI device to be
plugged into a USB-A port.

Contained on the disc is an Classic Mac OS installer for USBXchange
(also available in the [Adaptec drivers package.][1])

This is only the software, which is not very useful on its own. This
software assumes that you own the physical USB to SCSI cable that goes
with it. Emulating this program is therefore not very practical.

This is a hybrid disc that also runs on Windows. [Also available on
the Internet Archive as an .iso file.][2]

Compatibility

  [1]: http://macintoshgarden.org/apps/adaptec-powerdomain-scsi-card-firmware
  [2]: http://archive.org/details/usbxhange