I believe your insinuation to be factual, that you can use that adapter to connect a standard SATA drive to a scsi bus, since ultra160 is backwards compatible. But whatever the bandwidth of the bus your converting down to, depending on processor speed, that will be the bandwidth you see, so it's still down to what was available on logic boards and NuBus cards, only narrow, fast and fast wide scsi, topping out at 20MB/s (unless there is an Ultra SCSI NuBus card out there for 40MB/s). Your adapter would be pretty useful for later vintage PCI machines, because you can probably find an Ultra160 PCI card.
