User manual

21 Chapter 2
2.11 Power & HDD LED Connector (CN10)
Next, you may want to install external switches to monitor and control the
board. These features are optional: install them only if you need them.
The Power & HDD LED connector is 6-pin Wafer box connector. It pro-
vides connections for a power and hard disk access indicator.
2.11.1 Power & HDD LED Connector(CN10)
The HDD LED indicator for hard disk access is an active low signal (24
mA sink rate). Power supply activity LED indicator.
2.11.2 Power Reset button (S2)
Momentarily pressing the reset button will activate a reset. The switch
should be rated for 10 mA, 5 V.
2.12 Power connectors (CN3)
2.12.1 Main power connector, +5 V, +12 V (CN3)
Supplies main power to the PCM-9386 (+5 V), and to devices that require
+12 V.
2.12.2 Fan power supply connector (CN15)
Provides +5V power supply to CPU cooling fan.
2.13 Audio interfaces (CN2)
2.13.1 Audio connector (CN2)
The board provides all major audio signals on a 10-pin cable connector,
These audio signals include Microphone in (mono), Line in (stereo) and
Line out (stereo).
2.14 COM port connector (CN8,CN19)
The board provides two serial ports (COM1: RS-232; COM2: RS-232/
422/485) in one DB-9 connector (COM1) and one 14-pin dual-inline,
male header. It provides connections for serial devices (a mouse, etc.) or a
communication network. You can find the pin assignments for the COM
port connector in Appendix C.
For COM2, CN19, the default setting is to be used as one internal COM
port with RS-232/422/485. The optional function is to used as two inter-
nal RS-232 with different BOM and cable.