Keyboard Connector; Parallel Connector; Serial Connectors; Ultra320 Scsi Connector - IBM IntelliStation A Pro 6224 User Manual

6-pin IEEE 1394A (FireWire) connector (rear)

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.
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.

Ultra320 SCSI connector

Your computer has an integrated SCSI controller. This dual-channel controller
supports two independent, Ultra320 SCSI channels that support up to 15 SCSI
devices each. The SCSI connectors for the channels are on the system board. The
controller has the following features:
v Double-transition clocking to achieve up to 320 MBps (megabytes per second)
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data-transfer rates
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Chapter 4. Installing options
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