Biostar G41D3 - Serial Port Connector; Power Source Header for USB Ports

Motherboard Manual
16
JUSBV1/JUSBV2: Power Source Headers for USB Ports
Pin 1-2 Close:
JUSBV1: +5V for USB ports at USB1/RJ45USB1.
JUSBV2: +5V for USB ports at F_USB1/F_USB2.
Pin 2-3 Close:
JUSBV1: +5V STB for USB ports at USB1/RJ45USB1.
JUSBV2: +5V STB for USB ports at F_USB1/F_USB2.
31
Pin 1-2 close
31
JUSBV1
JUSBV2
31
Pin 2-3 close
J_COM1: Serial port Connector
The motherboard has a Serial Port Connector for connecting RS-232 Port.
Pin
Assignment
1 Carrier detect
2 Received data
3 Transmitted data
4 Data terminal ready
5 Signal ground
6 Data set ready
7 Request to send
8 Clear to send
9 Ring indicator
10 Key
1
2
9
10