G31-M4
3
SPEC
SATA Connector
x4
Each connector supports 1 SATA devices
Front Panel Connector
x1
Supports front panel facilities
Front Audio Connector
x1
Supports front panel audio function
CPU Fan Header
x1
CPU Fan power supply
System Fan Header
x1
System Fan Power supply
Clear CMOS Header
x1
Restore CMOS data to factory default
USB Connector
x2
Each connector supports 2 front panel USB ports
Power Connector (24pin)
x1
Connects to Power supply
Power Connector (4pin)
x1
Connects to Power supply
Back Panel
I/O
PS/2 Keyboard
x1
PS/2 Mouse
x1
VGA port
x1
LAN port
x1
USB Port
x4
Audio Jack
x3
Connects to PS/2 Keyboard
Connects to PS/2 Mouse
Connect to D-SUB monitor
Connect to RJ-45 ethernet cable
Connect to USB devices
Provide Audio-In/Out and microphone connection
Board Size 200 (W) x 235 (L) mm
OS Support Windows 2000 / XP / Vista / 7
Biostar reserves the right to add or remove support for
any OS with or without notice
1.4
R
EAR
P
ANEL
C
ONNECTORS
PS/2
Mouse
PS/2
Keyboard
USBX2
USBX2
LAN
VGA
Line In/
Surround
Line Out
Mic In 1/
Bass/ Center
Since the audio chip supports High Definition Audio Specification, the function of each audio
jack can be defined by software. The input / output function of each audio jack listed above
represents the default setting. However, when connecting external microphone to the audio port,
please use the Line In (blue) and Mic In (Pink) audio jack.
