Adaptec 39106 User Manual

■

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 
SCSISelect to disable the host adapter BIOS on the other SCSI 
cards.

(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.

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

1

LED Cable

from

motherboard

Pin 1

1

2-pin
LED
Cable