Connecting Scsi Devices - Adaptec AHA-2910 Installation Manual

1
Find the LED cable and unplug it from the LED
connector in your computer.
2
Connect the LED cable to the external LED con-
nector on the top edge of the host adapter. (See
the diagrams on page 2.) If the computer has a
two-position LED cable, connect it to pins 1 and 2
of the connector.
Do not replace the computer chassis cover or recon-
nect the power yet.
4

Connecting SCSI Devices

Caution:
AHA-2910/2910A host adapters
support only single-ended SCSI devices. Dif-
ferential SCSI devices may be damaged if you
connect them to the host adapter. Most SCSI
devices are single-ended. Read the device
documentation.
Connecting Internal SCSI Devices
Use the internal SCSI cable included with your host
adapter to connect up to two internal SCSI devices. If
you need to connect more than two devices, you
must get a 50-pin internal SCSI cable with enough
connectors for all devices. See Terminating the SCSI
Bus on page 6 for more information.
1 Grasp one end of the ribbon cable and insert it in
the host adapter's internal SCSI connector. Align
pin 1 on the ribbon cable with pin 1 on the
connector.
Pin 1 on the ribbon cable is usually marked with a
contrasting color on one edge of the cable; pin 1
on the connector is usually marked with a small
triangle or '1'.
2
Insert the next SCSI connector on the cable in the
SCSI connector on the first SCSI device. Maintain
correct pin-1 orientation.
3 Attach the other internal SCSI devices, if any, to
the other connector(s) on the ribbon cable. Main-
tain correct pin-1 orientation.
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AHA-2910/2910A Installation Guide
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Part Number: 510874-00, Rev. A
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Print Spec Number: 493882-00
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Current Date: 7/6/95
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ECN Date: 7/11/95
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