LSI 8751D - Manual (Page 23)

Detailed Installation Procedure 2-7
2.2.3.1 Making Internal SCSI Bus Connections
This section provides step-by-step instructions for making internal SCSI
bus connections:
Step 1. To connect an internal SCSI device, plug the 68-pin connector
on one end of the internal SCSI ribbon cable into the connector
J2. Make certain to match pin 1 on both connectors.
Figure 2.4
shows an example of this connection.
Figure 2.4 Internal SCSI Ribbon Cable to Host Adapter
Connection