USB to RS232 Converter 1.Small volume, easy installation 2.No power supply needed, ... serial signal rate CommunicationStandardAccord USB1.1 or 2.0, EIA RS232 standardUSB signalVCC, DATA+, DATA-, GND, FGRS-232 signalRX, TX, RTS ... )ShellPlasticColorBlueWeight70gUpdate Date:2012-04-24 04:56:33 USB to RS232 Converter