Keyboard Connector; Parallel Connector; Serial Connectors - IBM IntelliStation M Pro User Manual

4-pin IEEE 1394 (FireWire) connector (front)
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 three standard 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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IBM IntelliStation M Pro Type 6218: User's Guide
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