MSI KA780G Series User Manual page 27

M S-7551 M ainboard
Front Panel Connectors: JFP1, JFP2
These connectors are for electrical connection to the front panel switches and LEDs.
The JFP1 is compliant with Intel
Power Power
LED Switch
-
+
2 10
JFP1
1
9
-
+ -
+
HDD
Reset
LED
Switch
1 2
Power
JFP2
LED
7 8
Serial Port Connector: JCOM1
This connector is a 16550A high speed communication port that sends/receives 16
bytes FIFOs. You can attach a serial device.
2
1
JCOM1
En-18
®
Front Panel I/O Connectivity Design Guide.
JFP1 Pin Definition
PIN SIGNAL
1 HD_LED +
2 FP PWR/SLP
3 HD_LED -
4 FP PWR/SLP
5 RST_SW -
6 PWR_SW +
7 RST_SW +
8 PWR_SW -
9 RSVD_DNU
PIN
1
2
Speaker
3
4
5
6
7
8
PIN
1
2
3
9
4
5
6
7
8
9
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
SIGNAL DESCRIPTION
GND Ground
SPK- Speaker-
SLED Suspend LED
BUZ+ Buzzer+
PLED Power LED
BUZ- Buzzer-
NC No connection
SPK+ Speaker+
Pin Definition
SIGNAL DESCRIPTION
DCD Data Carry Detect
SIN Serial In or Receive Data
SOUT Serial Out or Transmit Data
DTR Data Terminal Ready
GND Ground
DSR Data Set Ready
RTS Request T o Send
CTS Clear To Send
RI Ring Indicate