MSI 915GLM4 User Guide - Page 23

USB Connectors, Serial Port Connector, IEEE 1394 Port

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Hardware Setup Serial Port Connector The mainboard offers one 9-pin male DIN connector as the 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 devices directly to the connector. Pin Definition 1 2 3 4 5 6 7 8 9 9-Pin Male DIN Connector 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 USB Connectors The mainboard provides an EHCI Universal Serial Bus root for attaching USB devices such as keyboard, mouse or other USB-compatible devices. You can plug the USB device directly into the connector. 1 23 4 5 67 8 USB Ports USB Port Descrip- PIN SIGNAL 1 VCC 2 -Data 0 3 +Data0 4 GND 5 VCC 6 -Data 1 7 +Data 1 8 GND DESCRIPTION +5V Negative Data Channel 0 Positive Data Channel 0 Ground +5V Negative Data Channel 1 Positive Data Channel 1 Ground IEEE 1394 Port The back panel provides one standard IEEE 1394 port. The standard IEEE 1394 port connects to IEEE 1394 devices without external power. The IEEE 1394 high-speed serial bus complements USB by providing enhanced PC connectivity for a wide range of devices, including consumer electronics audio/video (A/V) appliances, storage peripherals, other PCs, and portable devices. 1394 Port 2-11

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2-11
Hardware Setup
USB Connectors
The mainboard provides an EHCI Universal Serial Bus root for attaching
USB devices such as keyboard, mouse or other USB-compatible devices. You
can plug the USB device directly into the connector.
Serial Port Connector
The mainboard offers one 9-pin male DIN connector as the 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 devices directly to
the connector.
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
9-Pin Male DIN
Connector
USB Ports
1
2
3
4
5
6
7
8
PIN
SIGNAL
DESCRIPTION
1
VCC
+5V
2
-Data 0
Negative Data Channel 0
3
+Data0
Positive Data Channel 0
4
GND
Ground
5
VCC
+5V
6
-Data 1
Negative Data Channel 1
7
+Data 1
Positive Data Channel 1
8
GND
Ground
USB Port Descrip-
IEEE 1394 Port
The back panel provides one standard IEEE 1394 port. The standard IEEE 1394
port connects to IEEE 1394 devices without external power. The IEEE 1394
high-speed serial bus complements USB by providing enhanced PC connectiv-
ity for a wide range of devices, including consumer electronics audio/video
(A/V) appliances, storage peripherals, other PCs, and portable devices.
1394 Port
1 2
3 4 5
6
7 8
9
Pin Definition