When I connect my phone to my computers (Win 7 or 2 XP machines) it always connects as A/C and not as USB. I downloaded the Samsung USB drivers and this worked on the Win 7 machine for a while but then started connected as A/C again. Un-installed and installed the drivers again but they do now work now. The Samsung drivers did not work on either of the XP machines. So, as of now I think it is the phone? I do have the Power Manager app installed and the phone still connects as A/C with it running or not. Am I missing something?