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System Enclosure Connectors
The system enclosure is your system case. There are usu-
ally several features built-in to the case that connect to
the mainboard. The PR5 has connections for a number
of these in a connector block which includes connectors
for a Reset button, Suspend switch, Turbo LED, Speaker
and Keyboard lock. Your system case may or may not
have all of these features.
The location of the connector block and the pin assign-
ments are shown in the Configuration Quick Reference.
Other Connectors
There are several other connectors on the PR5, including
the power input, keyboard, PS/2 mouse, IDE activity LED
and CPU fan connectors. Their locations and pin assign-
ments are shown in the Configuration Quick Reference.
Power Input Connector
The system power supply connector is a 12-pin connec-
tor, divided into two sections, P8 and P9. The leads from
the system power supply plug onto this connector and
snap into place. If you connect the leads yourself make
sure you plug them on so that the black wires on each
lead are in the middle of the connector.
Keyboard & PS/2 Mouse Connectors
The external keyboard connector is a standard " AT" DIN
keyboard connector. The PS/2 connector is a 6-pin block
for the PS/2 mouse port cable.
The PR5 accepts two keyboard types, the AT keyboard
with its larger jack fits the onboard keyboard connector
directly. A PS/2 keyboard, which has a smaller jack, con-
nects to the keyboard port with a PS/2-to-AT jack adapter.
The onboard PS/2 connector is for the PS/2 mouse port.
If you want to use this type of mouse in your system,
you can connect it to the external PS/2 port.
The keyboard connector and PS/2 port pin assignments
are shown in the following table.
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