Thanks again. I measured 4v using a USB/RS232 (U232-P9) adapatator attached to a laptop and also a desktop + "T191" that looks exactly like http://www.cellcorner.com/xshp/unlock-phone-codes/motorola-t190-t191-t193-unlock-data-cable.html. Please, did someone buy this one and had good voltage and results? Regards.