Adaptec AVA-2906 User Manual page 15

If you are installing more than one internal SCSI device, continue
with the next step.
7 Connect all other internal SCSI devices, as shown.
Terminated internal SCSI device
Unterminated internal SCSI device
8 Terminate the device that is connected to the end of the cable.
Refer to the SCSI device's documentation for instructions.
9 Connect a power cable from your computer's power supply to
the power input connector on the SCSI device, as shown. Repeat
this step for each SCSI device.
Power cable
If you are also installing external SCSI devices, skip to the next
section (Connecting External SCSI Devices).
Installing Internal SCSI Devices
Internal SCSI cable
Power input connector
Power supply
6