User manual

AIMB-270 User Manual 82
B.8 Power LED & Keyboard Lock Connector (JFP2)
You can use an LED to indicate when the single board computer is on. Pin 1 of JFP3
supplies the LED's power, and Pin 3 is the ground.
B.9 Power switch/HDD LED/SMBus/Speaker (JFP1)
The single board computer has its own buzzer. You can also connect it to the exter-
nal speaker on your computer chassis.
Table B.8: Power LED & Keyboard Lock Connector (JFP2)
Pin Function
1 LED power
2 NC
3 GND
4 KEYLOCK#
5 GND
Table B.9: Power Switch/HDD LED/SMBus/Speaker (JFP1)
Pin Signal Pin Signal
1 SPK_P1 2 HDDLED+
3 PWR 4 NC
5 HDDLED- 6 GND
7 SPK_P3 8 SMB_DAT
9 SYS_RST 10 SPK_P4
11 SMB_CLK 12 GND