"Based on Windows XP-Embedded, the portable device allows users to simulate WAN connections with all sorts of error conditions."

That must be the first time Windows actually makes sense as the OS for an embedded system...

NISTnet (Linux-based) has been available for a decade (your tax dollars at work), and dummynet (BSD-based) is another option.

We use Itheon's WAN emulators to help people correctly size International WANs costing 10s of thousands a year. Whilst I agree there are many useful free tools available, if I used one as the basis for such important recommendations and got it wrong I'd be out of a job!

I'm looking forward to trying the new smaller lighter model - Oh, and staying employed.