Please help - spent a week 24hr/day, no results. Wouldn't not want anyone me to suicide? I got fc5. Windows detects the UPS with no problems, with out any additional settings. On unix, I use /dev/ttyS0 (this is 100% correct, since windows is run on virtual machine on the unix box). So, when I try to use the same software from developer (IPPON, Model Back Power 500 - "DUMB" UPS), written on Java and works and looks the same as in windows, it can not detect the UPS (does no see anything) on the /dev/ttyS0, on which windows within vmware detected it no problem. I reckon I gotta set up some stop bits, parity and speed on the port. "setserial" is no longer widely used, to I think "stty" is what I need. THE QUESTION: what and how do I set up the device so that programs (apcupsd, nut, vendor's software). And am I on the right way? Some comments: * /dev/ttyS0 is rw under the id I work. root's execution does not help either. * kermit with 9600 connects and nothing received or echoed back. * Whilst running programs under unix, /dev/ttyS0 is vacant. Appreciate your help. SERGIE.