Couldn't be, amw--this model works on many different brands of phone and nothing in the description when I bought it said "HTC." The pins and slot inside the plug and housing appear the same, the fit is perfect and snug enough and it actually does charge. It's just that the housing shape is different I think. On the left below is the Moto/standard/common design which my charger has. For the TP design, all you have to do is look at the socket or at your included mini-USB cable. And yet they get along fine...
