Four RS-232 ports with 10-pin connectors
16C550 UARTs with 16-byte FIFO
Speeds up to 115 Kbps
Choose address COM1 to COM4 or other user selectable I/O address
Individually selectable IRQ for each port (3 to 7, 9 to 12, or 15)
Full RS-232 interface support (TxD, RxD, RTS, CTS, DTR, DSR, DCD and GND)
Power consumption: +5V at 220mA (typ.)