Adaptec AHA-2940UW/OF User Manual page 19

4
Plug the other end of the internal SCSI cable into the connector
on the last internal SCSI device in the chain. This device must
be terminated. Make sure the colored stripe on the side of the
cable is aligned with pin-1 of the SCSI device's connector.
Figure 2-7. SCSI Cable Connector Location
5
Plug the remaining cable connectors into any remaining
internal devices. These devices must not be terminated.
6
Connect a DC power cable from your computer's power
supply to the power connector on the SCSI device(s).
7
Replace the computer chassis cover.
Figure 2-8. Power Cable Connection
Installation
Pin 1
2-7