Perhaps redundant, but I have a UMAX Astra 1200S.  It has a 25-pin
Mac-style SCSI connector, and I used it with an Adaptec 2940U
controller with a SCSI-2 to mac-scsi cable and a mac-scsi terminator
and sane under NetBSD with no issues other than image quality which is
kind of lame.
-- 
        Greg Troxel <gdt at ir.bbn.com>