Quantum 10K II - Manual (Page 45)

Installation
3 − 18 Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drives
3.5.2 Atlas 10K II Ultra 160/m SCSI Disk Drive With 80-Pin, SCA-2 SCSI
Connector
Figure 3-8 shows the location of the SCSI Connector on this version of the drive.
Table 3-6 provides signal names/pin locations for the 80-pin SCA-2 SCSI connector.
Figure 3-8 SCA-2 Connector on Quantum Atlas 10K II Ultra 160/m SCSI Hard Disk Drive
SCSI SCA-2 Connector
HDA
Pin 2 Pin 1
Pin 42 Pin
41
Pin 40 Pin
39
Pin 80 Pin 79