TYAN TOMCAT I875PF User Manual page 10

Tomcat i875PF S5105
Front USB Header (J9)
External Speaker Header (J10)
Signal
Description
VCC
USB
Channel_1
Data -
USB
Channel_1
Data +
GND
NC
Pin_1
Pin_4
Close Pin-2and Pin-3 (Default)
Enable onboard buzzer
Open Pin-1 ~ Pin-4
Disable onboard buzzer and can connect
to chassis 1x4 speaker by Pin_1 and
Pin_4
7
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Chapter 2: Board Installation
Signal
Pin # Pin #
Description
1 2 VCC
USB
3 4 Channel_2
Data -
USB
5 6 Channel_2
Data +
7 8 GND
9 10 GND
Pin_1 : Speaker +
Pin_2 : Buzzer +
Pin_3 : Speaker/ Buzzer –
Pin_4 : Speaker -