User Service Guide, Fifth Edition - HP 9000 rp4410/4440

1. Unplug the SCSI B cable From the SCSI backplane.
Figure 6-39 Unplugging the SCSI Cable B from the SCSI Backplane
2. Unplug SCSI cable B connector from the SCSI adapter board.
U320 SCSI Enablement and Conversion Procedures 203