With the external SCSI-1 to SCSI-3 adapter, you can adapt an external SCSI-1 Centronics 50-pin male connection to an external SCSI-3 Micro-Density 68-pin male connection.
Connector 1: SCSI-1 Centronics 50 Female
Connector 2: SCSI-3 Micro-Density 68 Male