I run alot of different things through the comm ports. Here is my setup...
COM 1 - IRQ 4 - Mouse
COM 2 - IRQ 3 - Internal modem #1(Voice and FAX)
COM 3 - IRQ 5 - Zoomer hookup
COM 4 - IRQ 9 - Internal modem #2 (Data)
I have a sound card and CD-ROM player but the Media Vision setup program set
up all the IRQ settings. I think the sound card is on IRQ 7. But it all
works without a hitch. Hope this helps.