IBM 6219 - IntelliStation M - Pro, Hardware Maintenance Manual

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6-pin IEEE 1394 (FireWire) connector (rear)
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Keyboard connector
There is one keyboard connector on the rear of the computer. Use this connector to
connect a PS/2 (non-USB) keyboard. The following illustration shows a keyboard
connector.
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If you attach a keyboard to this connector, USB ports and devices are disabled
during the power-on self-test (POST).
Parallel connector
There is one parallel connector on the rear of the computer. Use this connector to
connect a parallel device. The following illustration shows a parallel connector.
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The parallel connector supports three standard Institute of Electrical and Electronics
Engineers (IEEE) 1284 modes of operation: standard parallel port (SPP), enhanced
parallel port (EPP), and extended capability port (ECP). If you configure the parallel
port to operate in bidirectional mode, it supports the ECP and EPP modes. When
the parallel connector is configured as bidirectional, use an IEEE 1284-compliant
cable that does not exceed 3 meters (9.8 ft). Use the
Devices and I/O Ports
options in the IBM Configuration/Setup Utility program to configure the parallel
connector as bidirectional.
Serial connectors
There are two serial connectors on the rear of the computer. Use these connectors
to connect serial devices. The following illustration shows a serial connector.
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Ultra320 SCSI connector
Your computer has an integrated SCSI controller. This single-channel controller
supports an independent, Ultra320 SCSI channel. The SCSI connector for the
channel is on the system board. The channel supports up to 15 SCSI devices. This
controller uses:
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Double-transition clocking to achieve up to 320 MB-per-second data-transfer
rates
v Domain name validation to negotiate compatible data-transfer speeds with each
device
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Cyclic-redundancy checking (CRC) to improve data reliability
v An active terminator for SCSI bus termination
Installing options
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