Serial Port Connector: Com 2; Front Usb Connector: Jusb1 - MSI K9ND Master-A4R User Manual

MS-9182 Server Board

Serial Port Connector: COM 2

The mainboard provides one 9-pin header as serial port COM 2. 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 it.
COM2
1
9

Front USB Connector: JUSB1

The mainboard provides one USB 2.0 pinheader (optional USB 2.0 bracket available)
that is compliant with Intel
creases data transfer rate up to a maximum throughput of 480Mbps, which is 40
times faster than USB 1.1, and is ideal for connecting high-speed USB interface
peripherals such as USB HDD, digital cameras, M P3 players, printers, mo-
dems and the like.
Important
Note that the pins of VCC and GND must be connected correctly to avoid
possible damage.
2-14
PIN
1
2
2
3
4
5
6
7
8
9
®
I/O Connectivity Design Guide. USB 2.0 technology in-
JUSB1
2
1
Pin Definition
PIN SIGNAL
1 VCC
3 USB0-
5 USB0+
7 GND
9 Key (no pin)
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
10
9
PIN SIGNAL
2 VCC
4 USB1-
6 USB1+
8 GND
10 USBOC