Linux-friendly UPS

[Rashkae]

> 
> One issue you might want to bear in mind is the type of output.  Some
> upses only output a modified sine wave.  Both Belkin and Enermax have
> told me that this is not suitable for many modern PSUs, and so I bought
> a (Belkin) ups with a pure sine wave output.  They seem to cost a
> little more.  This may, however, just be a European issue.  I'm not an
> expert.

Simulated Sine works just fine with every PSU, including very modern 
ones, I've ever thrown them at.  By far, most UPS's use Simulated Sine. 
   Beware the salesman with a more expensive model :)