I use Vienna Pro and have done for quite a few years - I have a network Switch and just plug my computers via that - I keep my old Computers when I get a new one and just add to network.
Used to be really helpful when Computers were not quite so powerful, although not quite so important these days.
however if your main Computer goes down, you have a ready replacement!
As to Vienna Pro, it really is easy to set up and use and is also rock solid.
Nigel