2 High Speed 16550 UART serial ports (both 9-pin).
Each serial port independently configurable as COM 1 through COM 6.
Each serial port selectable for any IRQ 2/3/4/5/7/10/11/12/15.
Fully compliant with RS422 specification - balanced pair transmission.
Ideal for use in industrial applications over long distances of up to 4000 feet.
DB09 pin assignments:1=+RTS/2=-RTS/3=GND/4=+TXD/5=-TXD/6=+CTS/7=-CTS/8=+RXD/9=-RXD.
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Lava RS422 ISA Two Port Serial Card
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