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6-pin IEEE 1394 (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, Universal Serial Bus (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 two standard IEEE 1284 modes of operation:
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.
Universal Serial Bus connectors
There are eight USB 2.0 connectors, two on the front and six on the rear of the
computer. Use the USB connectors to connect optional telephony and multimedia
devices. USB 2.0 technology transfers data at up to 480 Mbps (megabits per
second) with a maximum of 127 external devices and a maximum signal distance of
5 meters (16 ft) per segment (if the device that is attached to the computer is a
USB 2.0 device). If multiple USB devices are attached to the computer, the USB
hub must be USB 2.0; otherwise, all USB 2.0 devices will transfer data at 12 Mbps.
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IBM IntelliStation M Pro Type 9229: User's Guide
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