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Adaptec SCSI Card 39160 User’s Reference

Installing Multiple SCSI Cards

■

You can install multiple SCSI cards in your computer; you are

limited only by the available system resources (for example,

IRQ settings, I/O port addresses, BIOS addresses, and so

forth).

■

Each SCSI card you install forms a separate SCSI bus with a

different set of SCSI devices. SCSI IDs can be reused as long as

the ID is assigned to a device on a different SCSI card (for

example, each SCSI card can have a device with SCSI ID 2).

■

If you have two or more SCSI cards and your computer boots

from a SCSI disk drive, leave the host adapter BIOS enabled on

the SCSI card to which the boot disk drive is connected. Use

SCSI

Select

to disable the host adapter BIOS on the other SCSI

cards.

Connecting the LED Connector

(

Optional feature

) Most computers have an LED disk activity light on

the front panel of the system case. If you choose to disconnect the

cable from the LED connector on the motherboard and connect it to

the LED connector on the SCSI card as shown in the diagram below,

the LED on the front panel of the computer will light whenever

there is activity on the SCSI bus.

Note:

If you connect the LED cable to the SCSI card, the LED

disk activity light will no longer indicate disk activity on the

non-SCSI disk drives.

LED Connector

on host adapter

LED Cable

from

motherboard

Pin 1

2-pin

LED

Cable

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 37 38

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Adaptec 39160 Guide d'installation Page 20