Originally Posted by
peterb
Cutting the cables is one thing, you then need to make sure the cut ends are insulated, and if you are thinking about replacing them at a later date, how are you going to do that safely and reliably?
Basically, I'd strongly advise against doing it (apart from anything else, you have instantly voided any warranty). Either hide the cables in the case, cable ties are good for that, or do the job properly and go modular.
SFF power supplies generally have few cables anyway as the space in a miniitx case limits the addition of peripherals anyway.