It's very bad design to use abbreviations everywhere without mentioned the full name at least once somewhere.
Thus UPS should be mentioned as "Uninterruptible power supply" at least once in the configuration menu. This would make a lot much more clearer.
Especially because in other languages it's not always called "UPS". And if you are not used to say "UPS" you need to search what this abbreviation means.
There is also one important rule that you should always keep in mind:
Before you use abbreviations, you need to mention the full name at least once in the beginning.
Thus UPS should be mentioned as "Uninterruptible power supply" at least once in the configuration menu. This would make a lot much more clearer.
Especially because in other languages it's not always called "UPS". And if you are not used to say "UPS" you need to search what this abbreviation means.
There is also one important rule that you should always keep in mind:
Before you use abbreviations, you need to mention the full name at least once in the beginning.