AXIOMTEK PICO840, User Manual

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PICO840/842 Pico-ITX Board
18 Board and Pin Assignments
2.5.6 Power LED Header (CN7)
The CN7 is for power LED interface.
2.5.7 SATA Power Connector (CN8)
The CN8 is a 4-pin 2.0mm pitch wafer connector which is compliant with JST
B4B-PH-K-S for SATA power interface.
2.5.8 External Speaker and Internal Buzzer Header (CN9)
Pin 1, 2 and 3 connect the case-mounted speaker unit or internal buzzer. While
connecting the CPU board 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(-).
2.5.9 Inverter Connector (CN10)
This is a DF13-8S-1.25C 8-pin connector for inverter. We strongly recommend you to
use the matching DF13-8S-1.25C connector to avoid malfunction.
Pin Signal
1 +5V
2 GND
Pin Signal
1 +12V
2 GND
3 GND
4 +5V
Pin Signal
1 EXT SPK+
2 EXT SPK-
3 Buzzer
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