Two independent RS-422/485 serial ports
Provides 3000 VDC isolation
16C550 UARTs with on-chip 16-byte FIFO
Transmission speeds up to 921.6 kbps
I/O address and interrupt selectable
Wide IRQ selection: 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15
Supports 2 wire or 4 wire operation
Supports Tx, Rx, RTS, and CTS signals
Automatic RS-485 data flow control or RTS control
Termination resistors jumper enable/disable
Space reserved for optional surge protection on data lines
Supports standard DOS COM1, COM2, COM3, and COM4
Supports Windows™ 98/2000/XP, Linux™
