LSI 21003 - Manual (Page 29)

Detailed Installation Procedure 2-13
2.2.3.2 Making External SCSI Bus Connections
This section provides step-by-step instructions for making external SCSI
bus connections. If you have only internal devices, proceed to
Section
2.2.4, “SCSI Bus Termination,” page 2-15 . To connect external SCSI
devices to the LSI21003:
Step 1. Plug the 50-pin HD connector on one end of a shielded external
SCSI cable into the host adapter connector J3 (see
Figure 2.1 ).
This connector is in the bracket attached to the back panel of
your computer.
Figure 2.9 shows how this connection is made.
Figure 2.9 External Cable to Host Adapter