Just remember if you are using a sm off.lite change keylink to com 1 so no conflicts and be sure to have a monitor and keyboard handy as 1 comm port cannot do keylink and serial inter.if a corp office comm 2 should be disabled in the bios to allow for the modem. disable pc anywhere remove the modem and then enable the comm port in the bios. if you do not disable any thing using that irq and enable something else you will have conflicts and it could shut you down. John