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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. Jump setting please refer to Page 57
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-
5 6
1 2
Internal Serial port
External Serial port