Can anyone tell me what kind of AC wall to usb adapter to get for my passthrough?... I have a 510 HV manual usb passthrough & it works great when tied to a computer or in my truck but when I ordered a adapter to plug into the wall, nothing.. It' blinks blue but nothing comes out. I wrote the company & they sent me out a replacement which looked a little different. instead of a usb hole in the adapter it had a cord w/ what looks like a usb at the end, but I just plugged it in. Same thing happens, blue light blinks but nothing comes out ?? hmmmm...anyone have any ideas?