I checked
again.  The connectors on the VAX 4000/500 are identical to
 SCSI connectors.  
 But the wiring to the ribbon cable is different. DSSI uses a 1:1
 mapping of pin numbers. The HD50 connector for SCSI is wired this way
 to the ribbon cable:
 HD50   ribbon
 1      1
 2      25
 3      3
 4      26
 5      5
 6      27
 ...    ... 
 
Yes, but if the connectors on both ends are the same I would be
able to use a SCSI cable to go from the 4000 to the HSD05.
--
Eric Dittman
dittman(a)dittman.net
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