Yamaha CD-R/RW Drive CRW6416SX Owner's Manual page 25

2 Connect the other end of the SCSI cable to the rear of your CRW6416SX
drive. Either SCSI connector (marked "SCSI-1" and "SCSI-2") may be used.
Connect SCSI cable
3 Connect the D-shaped end of the included power cable to the power
connector at the rear of your CRW6416SX drive. Connect the other end of
the cable to an electrical outlet.
Power connector
Power cable
Electrical outlet
Setting Up The CRW6416SX Drive
SCSI connector
18