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22 PCM-5820 Series User's Manual
2.11 Keyboard and PS/2 mouse connector
(CN17)
The PCM-5820 Series board provides a mini-DIN keyboard
connector, which supports both a keyboard and a PS/2 style
mouse. In most cases, especially in embedded applications, a
keyboard is not used. If the keyboard is not present, the standard
PC/AT BIOS will report an error or failure during the power-on
self test (POST) after resetting the PC. The PCM-5820 Series
board's BIOS standard setup menu allows you to select "All, But
Keyboard" under the "Halt On" selection. This allows non-
keyboard operation in embedded system applications without the
system halting during the POST.
2.12 Power connectors
2.12.1 Main power connector +5 V, +12 V (CN9)
Supplies main power to the PCM-5820 Series (+5 V) and devices
that require +12 V.
2.12.2 Auxilary power connector (CN10)
Supplies secondary power to peripherals that require -5 V and
-12 V.
2.12.3 CPU fan power connector (CN6)
This connector is reserved for an optional fan, which facilitates a
better working environment for the CPU.
2.13 IR connector (CN7)
The PCM-5820 Series provides an IrDA port for transfer rates of
115 kbps. This connector supports the optional wireless infrared
transmitting and receiving module, which is mounted on the
system case. Configuration of the module is done through BIOS
setup.