I bought it because I need an AC adaptor to work with travel router (lost the original, still have USB power cable)other than working with the travel router, it also works with my pdas (Asus A626, which is not compatible with some chargers, but this one and the one with V3 do; and HP 211), all nokia phones I have (I have USB charging cable and plug adaptor), and on top of all, blackberry pearlperhaps I have some luck that it works with my devices, and, for NYC customers only, J&R; also sells it for better price