Step 4. Be sure to tighten the bracket screw into the bracket securely before you connect the internal and external SCSI devices.

2.2 SCSI Device Cables

For reliable Ultra320 operation, be sure to use an Ultra320 rated SCSI cable. The Ultra320 SCSI cable also has built-in low voltage differential and single-ended termination. This built-in feature is included because most Ultra320 SCSI hard disk drives are not made with on-board low voltage differential termination.

2.2.1 Internal SCSI Cables

You can connect all internal SCSI devices to the host adapter with an unshielded, twisted pair, 68-pin ribbon cable. Some 68-pin internal cables come with a low voltage differential and single-ended terminator on one end, which must be furthest from the host adapter. Figure 2.3 and Figure 2.4 show internal cables with and without a terminator.

Figure 2.3 SCSI Cable - 68-pin High Density with Terminator

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Terminator

Figure 2.4 SCSI Cable - 68-pin High Density without Terminator

2-4

Detailed Host Adapter Installation

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