MS-9638 Server Board
2-14
Front USB Connector: JUSB1, JUSB2
The mainboard provides two USB 2.0 pinheaders (optional USB 2.0 bracket available)
that are compliant with Intel
®
I/O Connectivity Design Guide. USB 2.0 technology
increases 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, MP3 players, printers, mo-
dems and the like.
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.
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.
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
1
9
2
10
JUSB1
1
2
9
10
JUSB2
COM2
19
2
10
9638v3.0-2.p65 2007/5/8, 下午 01:5414
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