In theory at least you might be able to use
this thing to mount a SCSI drive the same way, assuming it works with 10.6. (It does work with 10.5)
I thought about that too, but those little buggers were hard to come by at the time and expensive ($109 in 2009!?), nor widely adopted or supported. (...)
$109 actually seems incredibly reasonable for an obscure tech product that by definition isn't going to sell in large quantities yet satisfies a real need, but I suppose it depends on your point of view. In 1986 a "Digi-Mouse" for a Tandy 1000 computer was $99 for the mouse and another $99 for the controller board. (The Radio Shack catalog archive was the first place I could think of to find a price list from the early mac era.)