Adaptec ASC39320A-ROHS-KIT Guia do Utilizador descarregar pdf (Página 34)

2-7

Using the Adaptec SCSI Card and SCSI Devices

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 figure

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.

Overriding SCSI Termination Settings

You use SCSISelect to control the termination of the two SCSI

channels on an Adaptec SCSI Card. The default termination setting

for both channels is Automatic. This setting allows the SCSI card to

adjust SCSI termination automatically, depending on which

connectors have SCSI devices attached to them.

Regardless of the SCSISelect termination setting, the SCSI card

termination is always disabled when the power is turned off. If you

want SCSI card termination to be enabled when the power is

turned off, you must terminate the SCSI channels manually.

LED Connector

on SCSI Card

LED Cable

from

Motherboard

Pin 1

2-pin

LED

Cable

U320 UG.book Page 7 Tuesday, September 23, 2003 1:47 PM

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Adaptec ASC39320A-ROHS-KIT Guia do Utilizador Página 34