Hello, Maybe this information is good for more people. Inform Guard S 1500AP uses megatec. The information on http://www.networkupstools.org/compat/stable.html tricked me :-) Regards, Michael ------------- Hi; Our UPS is using the megatec protocol. Best regards C. Noyan Gursoy Technical Service Engineer -----Original Message----- From: Alican YILMAZ Sent: Wednesday, January 02, 2008 8:12 AM To: Noyan G?RSOY Subject: FW: Inform Gurad S 1500AP Alican Y?lmaz -----Original Message----- From: Michael Max [mailto:max at advim.no] Sent: Tuesday, January 01, 2008 8:40 PM To: alicany at inform.com.tr Subject: Inform Gurad S 1500AP Hello! I have bought an Inform Guard S 1500AP to replace my older Inform UPS. I run the UPS to support a Linux (Fedora 8) based server. I can't find any information on your web-site on what communication protocol the Inform Guard S 1500AP is using, and can't get the supporting software (nut) to work. Looking forward to receive some information from you. Thanks in advance.