Switch and Jumper Settings For Non Plug 'n' play Modems. Jumper Settings For 6 Jumper or 6 Switch Modems. Com 1/3f8, Irq 4 - 1,2,5 short Com 2/2f8, Irq 3 - 2,4 short Com 3/3e8, Irq 4 - 1,5 short Com 3/3e8, Irq 5 - 1,6 short Com 4/2e8, Irq 2 - 3 short Com 4/2e8, Irq 3 - 4 short ------------------------------------------------------------------- Jumper settings for an 8 jumper modem card : Com port settings : Com JP18 JP19 1/3f8 on on 2/2f8 on off 3/3e8 off on 4/2e8 off off IRQ settings : Jumper 16 15 14 13 12 11 10 9 8 IRQ 3 4 5 7 9 10 11 12 15 ------------------------------------------------------------------- Switch Settings For 8 Switch Modems For Com Ports : Com 1/3f8 - switches 5,7 on Com 2/2f8 - switches 5,8 on Com 3/3e8 - switches 6,7 on Com 4/2e8 - switches 6,8 on For Interupt Requests (IRQ's) Int 3 - switch 2 on Int 4 - switch 3 on Int 5 - switch 4 on -------------------------------------------------------------------