OR! Because one OR the other (or both, as this is not an exclusive or) needs to be present in the search result.
        
                    
             
        
        
        
Jim is the main antagonist while Edward is the main protagonist of the movie.
        
             
        
        
        
Answer: Depends on the power of the computer /computers and the UPS 
Explanation: For someone who had a big connected network of computers and printers we would plug the computer or server into the UPS as well as the monitor and sometimes a printer sometimes the monitor was plugged into the wall 
When you get a UPS you must plug it in for a certain time could be hours or even a day.  A USP has a big battery in it and you must charge it (sometimes it comes semi-charged but you must plug it in to strengthen it. )
there are two connector wires that you affix to the battery and you must put a lot of strength into it to make it secure.
So in closing, you can get away with two like a desktop and a laptop. 
Read your documentation that comes with the UPS