This is a FYI.
I had a query regarding buying a WIP310 .
Seems there are three part numbers you can order;
If you are offered WIP310-G1, WIP310-G2 or WIP310-G4, the G1/2/4 are related to the power adaptor;
WIP310-G4 is Australia
WIP310-G2 is Europe
WIP310-G1 is US
Alberto Montilla, was kind enough to explain the differences.