Folks, I am running in a bit of a problem here. We received an N4000 machine with MPE/iX. On the back panel, there is a port that has " General Use/ UPS Serial port" next to it. Naive as I could be, I was planning to use it as... well, a "General Use Serial port" (I have to connect a credit card authorisation PC to it). Now, HP tells me the following : "This port is intended for use with UPS only and, although some people have it working with other devices, we will not support it". They could not tell why they would not support it( No means No I guess). My question is: are there people around here who have it working ? Are there any problems ? Also, OK, I will try anyway, but what are the alternatives... I don't really want to get involved with DTCs unless I have to... TIA Ilya * To join/leave the list, search archives, change list settings, * * etc., please visit http://raven.utc.edu/archives/hp3000-l.html *