Ultra 3/160 Scsi Connector - IBM IntelliStation M Pro User Manual

See "Input/Output connector locations" on page 9 for the location of this
connector.
Some models come with an AGP adapter that has dual video connectors. If you
have problems viewing information with a second monitor, see "Changing monitor
settings" on page 18.

Ultra 3/160 SCSI connector

Some computer models come with a SCSI adapter, which supports an Ultra
3/160/MB SCSI internal channel in a full-featured PCI 2.1-/2.2-compliant bus
master package. This configuration supports zero wait state, 32-bit memory
transfers at 160 Mbytes/second, when low voltage differential (LVD) SCSI
peripherals are attached. This channel supports up to 15 SCSI devices. In addition,
this adapter uses:
v Double-transition clocking to achieve high transfer rates
v Domain name validation to negotiate compatible data transfer speeds with each
v Cyclic-redundancy checking, instead of the usual parity checking, to significantly
SCSI cabling requirements
You can install five internal SCSI devices using the SCSI signal cable that comes
with your computer. If you plan to attach external SCSI devices, you must order an
additional SCSI cable. To select and order the correct cables for use with external
devices, contact your IBM reseller or IBM marketing representative. To receive an
indication of SCSI hard-disk drive activity, you must also connect the SCSI adapter
to the SCSI LED (JA91) connector on the system board. See "System board" on
page 28 for the location of the SCSI connector.
Setting SCSI IDs
Each SCSI device connected to a SCSI controller must have a unique SCSI ID. This
ID enables the SCSI controller to identify the device and ensure that different
devices on the same SCSI channel do not attempt to transfer data simultaneously.
SCSI devices that are connected to different SCSI channels can have duplicate SCSI
IDs. Refer to the information that is provided with the device for instructions to set
its SCSI ID. With a SCSI adapter installed in your computer, you can use its 68-pin
SCSI connector to connect different types of SCSI devices.
To install external SCSI devices, you must have an optional SCSI PCI adapter
installed. Refer to the information that is provided with the device for instructions
to set its SCSI ID.
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