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Chapter 2
The Back Panel provides the following connectors:
RJ45
Mouse
Keyboard USB
Mouse Connector: JMS1
The VIA P4MA PRO mainboard pro-
vides a standard PS/2 mouse connec-
tor for attaching a PS/2 mouse. You
can plug a PS/2 mouse directly into
this connector. The connector loca-
tion and pin assignments are as
follows:
6
4
2
PS/2 Mouse (6-pin Female)
Pin Definition
PIN
SIGNAL
1
Mouse DATA
2
NC
3
GND
4
VCC
5.
Mouse Clock
6.
NC
Back Panel
Parallel
COM 1
VGA out
Keyboard Connector: JKB1
The mainboard provides a standard PS/
2 keyboard connector for attaching a
PS/2 keyboard. You can plug a PS/2
keyboard directly into this connector.
5
3
1
PS/2 Keyboard (6-pin Female)
DESCRIPTION
PIN
Mouse DATA
1
No connection
2
3
Ground
4
+5V
Mouse clock
5.
No connection
6.
2-8
MIDI/Game
L-out L-in MIC
6
5
4
3
2
1
Pin Definition
SIGNAL
DESCRIPTION
Keyboard DATA
Keyboard DATA
NC
No connection
GND
Ground
VCC
+5V
Keyboard Clock
Keyboard clock
NC
No connection
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