UNIDENTIFIED AD450 AT I/O CARD Card Type Multi I/O card Chipset/Controller N/A I/O Options Game port, parallel ports (2), serial ports (2) Maximum DRAM N/A [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 J1 Game port J4 Serial port 2 J3 Parallel port J5 SERIAL PORT CONFIGURATION Port 1 Port 2 J2/E J2/F J2/G (J1) (J3) COM1 COM3 Pins 2 & 3 Open Pins 1 & 2 closed closed COM1 COM4 Pins 1 & 2 Open Pins 1 & 2 closed closed COM4 COM3 Pins 2 & 3 Open Pins 2 & 3 closed closed COM4 COM4 Pins 1 & 2 Open Pins 2 & 3 closed closed COM2 N/A N/A Pins 2 & 3 N/A closed N/A COM2 N/A Pins 1 & 2 N/A closed SERIAL PORT INTERRUPT SELECTION Port 1(J1) Port 2 (J3) J2/C J2/D » IRQ4 IRQ3 Pins 1 & 2 Pins 2 & 3 closed closed IRQ3 IRQ4 Pins 2 & 3 Pins 1 & 2 closed closed PARALLEL PORT CONFIGURATION LPT J2/B 2 Pins 1 & 2 closed 3 Pins 2 7 3 closed PARALLEL PORT INTERRUPT SELECTION IRQ J2/A 7 Pins 1 & 2 closed 5 Pins 2 & 3 closed