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PICO300 Pico-ITX Board
Board and Pin Assignments 19
2.5.7 External Speaker and Internal Buzzer Header (CN9)
Pin 1, 2 and 3 connect the case-mounted speaker unit or internal buzzer. While
connecting to an internal buzzer, please set pin 2 and 3 closed (default); while
connecting to an external speaker, you need to set pins 2 and 3 opened and connect the
speaker cable to pin 1(+) and pin 2(-).
2.5.8 Power LED Header (CN10)
The CN10 is for power LED interface.
1
2.5.9 Inverter Connector (CN11)
This is a Hirose DF13-8P-1.25C 8-pin connector for inverter. We strongly recommend
you to use the matching DF13-8P-1.25C connector to avoid malfunction.
2.5.10 Power and Reset Button Connector (CN12)
This is a 3-pin (pitch=1.25mm) wafer connector which is compliant with Molex
530470310 for power and reset button interface.
Pin Signal
1 EXT SPK+
2 EXT SPK-
3 Buzzer
Pin Signal
1 +5V
2 GND
Pin Signal
1 VBL1 (+12V level)
2 VBL1 (+12V level)
3 VBL2 (+5V level)
4 VBL_ENABLE
5 GND
6 GND
7 GND
8 VBL Brightness Control
Pin Signal
1 FP_PSIN_N
2 GND
3 FP_RST_N