5. Function Illustrations
M81-X Series User’s Manual
19
5.21. Back Panel I/O Connectors “PS/2, USB, LPT, COM1, VGA1, Game_Audio”
The back panel provides external access to PS/2 style Keyboard and Mouse port, one
Serial port, one AGP display port, one Parallel port dual USB port and one Game_Audio
port, which are integrated on the motherboard for PC99 specification.
PS/2 is a dual mini DIN ports. The upper port can be used by a PS/2 Mouse or
Pointing device. The lower port can be used by a PS/2 Keyboard.
USB is a dual Universal Serial Bus ports. Use these ports to connect to USB devices
(USB Mouse, Keyboard, Scanner, Modem, etc).
LPT is a highrise Parallel port that can be used by Printers or other Parallel
Communication devices.
COM1 is a Serial port that can be used by Serial devices such as a Mouse, External
Modem, Drawing Tablet, Plotter, etc.
VGA1 is a AGP display port for output to a Monitor device.
Game_Audio is dual port for Game_MIDI, Line-Out, Line-In, Microphone. The upper
is a Game_MIDI port that can be used by a Joystick controller or a MIDI device. The
lower is three 1/8” Audio jack. The left side jack is for a stereo Line-Out signal to
Speaker device. The middle jack is for a stereo Line-In signal to Audio Input device.
The right side jack is for stereo Microphone.
20
1
11
10
Assignment
Pin
Pin
Assignment
+3.3V
11
1
+3.3V
-12V
12
2
+3.3V
GND
13
3
GND
PW ON/OFF
14
4
+5V
GND
15
5
GND
GND
16
6
+5V
GND
17
7
GND
-5V
18
8
PW-GOOD
+5V
19
9
+5VSB
+5V
20
10
+12V
