Biostar A770 A2+ Setup Manual page 21

JCO M2: Se rial port Conne ctor
The motherboard has a Serial Port Connector for connecting RS-232 Port.
JKBV1: Powe r Source Heade r for PS/2 Ke yboard and Mouse
A770 A2+/A740X A2+
Pin
1
2
3
4
5
6
7
8
9
10
2
10
1 9
1
1
3
3
Pin 1-2 Close
+5V for PS/2 keyboard and
mouse.
1
3
Pin 2-3 close
+5V STB for PS/2 keyboard and
mouse.
Assignment
Carrier detect
Received data
T ransmitted data
Data terminal ready
Signal ground
Data set ready
Request to send
Clear to send
Ring indicator
Key
19