@InTheSand:
Termination issues or something else? Search for "A3000" on
this page.
Also keep in mind that if you attach both internal and external devices, there should be no termination on the motherboard. This because the scsi-controller will then be in the middle of scsi-chain and only the beginning and end of the scsi-chain should be terminated - which in that case should be the last internal device and the last external device.
If you use external device every now and then, but not always, a simple solution is to never have any termination on the motherboard, putting an external DB25 terminator in the external scsi-connector of the A3000 when no external unit is connected.
/Patrik