Mainboard PI852
14
Serial Port Header: COM
This mainboard provides a COM header for you to connect an additional serial connector on your
case back panel. Attach the cable of serial connector (Optional) onto this header, and then you can
use the serial connector connecting with a mic, modem or other peripheral device.
Pin
Assignment
Pin
Assignment
1
Data Carry Detect
2
SerialIn or Receive Data
3
SerialOut or Transmit Data
4
Data Terminal Ready
5
Ground
6
Data Set Ready
7
Request To Send
8
Clear To Send
COM
9 Ring
Indicate
10
N/C
Power for Back Panel Serial Port Headers: COM PORT POWER
This mainboard provides three COM Ports on the back panel. You can adjust the jumper caps on the
COM PORT POWER header to +5V or +12V depending on the power requirements of the devices
connected to the serial ports.
Pin
Assignment
Pin
Assignment
1 +5V
2 +5V
3 USB-
4 USB-
5 USB+
6 USB+
7 Ground
8 Ground
USB2
9 Key
10
N/C
Attention
If you are using a USB 2.0 device with Windows 2000/XP, you will need
to install the USB 2.0 driver from the Microsoft
®
website. If you are
using Service pack 1 (or later) for Windows
®
XP, and using Service
pack4 (or later) for Windows® 2000, you will not have to install the
driver.
