Powerware Series 9 9120 UPS System "turn back beeper" Questions

...back after a short period after pushing on/off button We have no trouble shooting manual You have to turn socket of ups power cord 180 degrees, because the ups is measuring voltage between ground and ...

...beeper, or turn it off completely. I have two of these in my house, and have set them to never beep. The cable is goofy because it is USB on one end and a network-type on the other end. Software ...