Here maybe another option, if you have a newer computer, especially the later Pentiums, they sometimes have a PS\2 mouse port, sometimes when the computers are assembled the on board PS\2 cable and socket is left out, and you just use the normal serial mouse (DB9 PIN Socket) If you are the first owner you might have a cable and socket laying around for it, sometimes not. A PS\2 mouse port has a MINI DIN plug. My PS\2 mouse runs off IRQ 12 (typical I think) leaving both IRQs 3 and 4 available. Dean. (-; "Beauty is in the eye of the beer holder..." ;-) > Hi, > > I have a need to operate 3 comm ports on my pc, so bought a > standard card that has FDD, HDD, game, LPT and 2 COMs. I disabled > the FDD, HDD and game ports and configured the com ports to > 3 and 4 using jumpers on the board. > > Having installed the card, Win95 detected the new ports. All well > and good, but in use, com3 stops com1 working and com4 stops com2. > > It must (surely) be possible to configure the system so that I can > use at least three of the ports at the same time. > > Anyone help me out on this? > > > Thanks and regards, > > > Mike Watson