2 RS-422/RS-485 serial port
transfer rate: 115kbps max
I/O address: 200H-3F8H
IRQ: 3, 4, 5, 6, 7, 9, 10, 11, 12, 15
500VDC opto isolaton voltage
support DOS mode com1, com2, com3, com4
Power consumption: +5V 400mA(typical), 950mA(max)
working temperature: 0 - 50 degree
