COMMELL P4LA - Manual (Page 31)

P4LA User’s Manual Hardware Setup
Enhanced IDE Interface 31
2.15 <Serial Port>
The board has one RS232 serial ports on real I/O panel, and five onboard serial port .
COM2 Support RS232/422/485.
This Pin header provide +5V/+12V for COM1/COM2 Pin1,Pin 9.
Jumper: JP1/2
Type: onboard 6-pin header
Pin Description Pin Description
1 VCC 2 +12V
3 COM1/2 pin1 4 COM1/2 pin9
5 MDCD1- 6 MRI2-
Default: JP1 (3-5) JP2 (4-6)
COM2/3/4/5/6
1 2
5 6
COM1