MSI G31M3 User Guide - Page 32

Front USB Connector: JUSB1 ~ 2, Serial Port Connector: JCOM 1

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MS-7528 Mainboard Front USB Connector: JUSB1 ~ 2 These connectors, compliant with Intel® I/O Connectivity Design Guide, is ideal for connecting high-speed USB interface peripherals such as USB HDD, digital cameras, MP3 players, printers, modems and the like. JUSB1~2 2 10 1 9 Pin Definition PIN SIGNAL 1 VCC 3 USB0- 5 USB0+ 7 GND 9 Key (no pin) PIN SIGNAL 2 VCC 4 USB1- 6 USB1+ 8 GND 10 USBOC USB 2.0 Bracket (Optional) Important Note that the pins of VCC and GND must be connected correctly to avoid possible damage. Serial Port Connector: JCOM 1 This connector is a 16550A high speed communication port that sends/receives 16 bytes FIFOs. You can attach a serial device. JCOM1 2 1 9 2-18 Pin Definition PIN SIGNAL 1 DCD 2 SIN 3 SOUT 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI DESCRIPTION Data Carry Detect Serial In or Receive Data Serial Out or Transmit Data Data Terminal Ready Ground Data Set Ready Request To Send Clear To Send Ring Indicate

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MS-7528 Mainboard
2-18
Front USB Connector: JUSB1 ~ 2
These connectors, compliant with Intel
®
I/O Connectivity Design Guide, is ideal for
connecting high-speed USB interface peripherals such as
USB HDD
,
digital cameras
,
MP3 players
,
printers
,
modems and the like
.
1
2
9
10
JUSB1~2
PIN
SIGNAL
PIN
SIGNAL
1
VCC
2
VCC
3
USB0-
4
USB1-
5
USB0+
6
USB1+
7
GND
8
GND
9
Key (no pin)
10
USBOC
Pin Definition
Important
Note that the pins of VCC and GND must be connected correctly to avoid
possible damage.
USB 2.0 Bracket
(Optional)
Serial Port Connector: JCOM 1
This connector is a 16550A high speed communication port that sends/receives 16
bytes FIFOs. You can attach a serial device.
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 Terminal Ready
5
GND
Ground
6
DSR
Data Set Ready
7
RTS
Request To Send
8
CTS
Clear To Send
9
RI
Ring Indicate
Pin Definition
JCOM1
1
9
2