Gerald,
I would stick with port 1 or 2. Used to be problems with memory addresses using other ports. Some serial devices do not work otherwise.

>Hi Tariq, James . Thanks for your reply.
>
>What is an Indicator Device ?
>
>I am not sure if this is related to one specific port. Originally there is a com1 port, which is being used by a Touch Screen. This comes up in Use
>
>I then installed an additional PCI Serial Card.. It is installed as Com6
>When I Copy Con: Com6, this also comes up as being in use (error message is Com1 is not a recognized device in copy con: and in a utility which checks serial ports it says Port already opened'
>
>Regards,
>Gerard
>
>
>
>>Your indicator device is creating problem.
>>Contact Indicator installer company.