7
Connecting External SCSI Devices
If you are connecting external SCSI devices to your
host adapter, you must obtain an external SCSI cable
for each external device you install.
1
Prepare each SCSI device for installation; config-
ure the SCSI ID and attach a terminating plug into
the last external device. For instructions, see the
device’s documentation as well as SCSI Configura-
tion Guidelines on page 2.
2
Plug the connector at one end of the external SCSI
cable into the host adapter’s external SCSI
connector.
3
Plug the connector at the other end of the cable to
either one of the SCSI connectors on the external
SCSI device.
4
To connect other external SCSI devices, daisy-
chain each device to the previous device until all
external SCSI devices have been connected.
Using the LED Connector
(Optional) Most computers have an LED disk activity
light on the front panel. If you disconnect the cable
from the LED connector on the motherboard and
connect it to the LED connector on the host adapter,
the LED on the front panel of the computer will light
whenever there is activity on the SCSI bus.
Reassembling the Computer
Be sure all power switches are
OFF
, then replace the
computer chassis cover and reconnect the power
cables to your computer and peripherals. Before
turning on your computer and peripherals, review
the following section, Configuring the Host Adapter. It
may be necessary to configure the host adapter.
Configuring the Host Adapter
The AHA-2940Ultra/2940Ultra Wide includes the
onboard, menu-driven SCSISelect configuration util-
ity, which allows you to change host adapter settings
without opening the computer or handling the
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