8
(6) Serial port Connector: COM3 /COM1
COM1 (9-pin Block): RS232 Port; COM3 (9-pin Block): RS232/422/485 Port
COM1 port can function as RS232 port.
COM3 port can function as RS232/422/485 port. In normal settings COM3
functions as RS232 port. With compatible COM cable COM3 can function as
RS422 or RS 485 port.
User also needs to go to BIOS to set
‘Transmission Mode Select’
for COM3
(
refer to Page-24
)
at first, before using specialized cable to connect different pins of
this port.
1 2 3 4 5
6 7 8 9
RS2
32
DCD
#
RS2
32
SIN
RS2
32
SO
UT
RS2
32
D
TR
#
G
ND
RS2
32
RI
#
RS2
32
CTS
#
RS2
32
RTS
#
RS2
32
DSR
#
RS232 Mode
(COM1/COM3)
RS422 Mode
(*COM3)
RS485 Mode
(*COM3)
Pin1
G
ND
RS
422
RX
-
(B)
RS
422
RX
+
(A)
RS
422
TX
+
(A)
RS
422
TX
-
(B)
Pin1
G
ND
RS
485
D+(A
)
RS
485
D
-(B)
Pin1
(7) Line-In, Lin-Out, MIC Audio connectors: AUDIO1
Color
Name
Function
Blue
Line-in
Audio input to sound chip
Green
Line-out
Audio output to speaker
Pink
MIC
Microphone Connector
2-2-2 Motherboard Internal Connectors
(1)
ATXPWR (24-pin block): Main Power Connector
ATX Power Supply connector: This is a new defined 24-pins connector that usually
comes with ATX case. The ATX Power Supply allows using soft power on momentary
switch that connect from the front panel switch to 2-pins Power On jumper pole on the
motherboard. When the power switch on the back of the ATX power supply turned
on, the full power will not come into the system board until the front panel switch is
momentarily pressed. Press this switch again will turn off the power to the system
board.
