A770 A2+/A740X A2+
19
JCO M2: Se rial port C onne ctor
The motherboard has a Serial Port Connector for connecting RS-232 Port.
Pin
Assignment
1 Carrier
detect
2 Received
data
3 T ransmitted
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
JKBV1: Powe r Source Heade r for PS/2 Ke yboard and Mouse
3
1
Pin 1-2 Close
+5V for PS/2 keyboard and
mouse.
1
3
3
1
Pin 2-3 close
+5V STB for PS/2 keyboard and
mouse.
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