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MS-7151 ATX Mainboard
Serial Port Header: JCOM1 (Optional)
The mainboard offers one 9-pin header as serial port. The port is a 16550A
high speed communication port that sends/receives 16 bytes FIFOs. You can attach
a serial mouse or other serial device directly to it.
6
1
JCOM1
Front Panel Connectors: JFP1 / JFP2
The mainboard provides two front panel connectors for electrical connection
to the front panel switches and LEDs. JFP1 is compliant with Intel
Connectivity Design Guide.
Power
Power
LED
Switch
2
10
JFP1
1
HDD
Reset
LED
Switch
Speaker
2
JFP2
1
Power
LED
2-18
9
5
PIN
SIGNAL
1
HD_LED_P
2
FP PWR/SLP
3
HD_LED_N
4
FP PWR/SLP
9
5
RST_SW_N
6
PWR_SW_P
7
RST_SW_P
8
PWR_SW_N
9
RSVD_DNU
PIN
SIGNAL
8
7
1
GND
3
SLED
5
PLED
7
NC
Pin Definition
PIN
SIGNAL
DESCRIPTION
1
DCD
Data Carry Detect
2
SIN
Serial In or Receive Data
3
SOUT
Serial Out or Transmit Data
4
DTR
Data T erminal Ready)
5
GND
Ground
6
DSR
Data Set Ready
7
RTS
Request T o Send
8
CTS
Clear To Send
9
RI
Ring Indicate
JFP1 Pin Definition
DESCRIPTION
Hard disk LED pull-up
MSG LED pull-up
Hard disk active LED
MSG LED pull-up
Reset Switch low reference pull-down to GND
Power Switch high reference pull-up
Reset Switch high reference pull-up
Power Switch low reference pull-down to GND
Reserved. Do not use.
JFP2 Pin Definition
PIN
SIGNAL
2
SPK-
4
BUZ+
6
BUZ-
8
SPK+
®
Front Panel I/O
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