Appendix A

SCSI Cables and

Connectors

MegaRAID SCSI 320-1 provides several different types of SCSI connectors. The connectors are:

￿One 68-pin high density internal connector

￿One 68-pin very high density external connector

A.1 68-Pin High-Density SCSI Internal Connector

The SCSI channel on the MegaRAID SCSI 320-1 controller has a 68-pin high density 0.050 inch pitch unshielded connector.

This connector provides all signals needed to connect MegaRAID SCSI 320-1 to Wide SCSI devices. The following connector pinouts are provided for both single-ended and differential primary bus (P-CABLE) as specified in the SPI (SCSI Parallel Interface) documentation.

The cable assemblies that interface with the 68-pin connector are:

￿Flat ribbon or twisted pair cable for connecting internal Wide SCSI devices

￿Round shielded cable for connecting external Wide SCSI devices

MegaRAID SCSI 320-1 Hardware Guide

A-1

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