Descrtion:This is a newly designed product, using the Taiwan prolific production company PL2303HXD s, PL2303HXD perfectly compatible with win XP/VISTA/7/8/8.1 / Android OTGFull compliance with the USB Specification v1.1Supports RS-232 serial interface with Programmable baud rate from 75 bps to 12 MbpsSupports RS422/RS485 interfaceExtensive flow control mechanism like adjustable high/low watermark level, automatic hardware or flow control, and inbound data er overflow This product is designed for , product testing, low-cost MCU communications and other applications, there are four lead,Red +5 VBlack GND RXDGreen TXDYellow RTSBlue CTSProduct Applications:Single- upgrade solution for Legacy RS232 devices to USB interfaceUSB to RS232 converters/cables/sHealthcare/ USB Interface Data nsfer CablePersonal Infotainment/Media Player Docking USB InterfaceCellular/PDA USB Interface Data nsfer CableSerial-over- Wirele SolutionUSB Barcode/Smart Card s/ USB InterfacePoint-of- (POS) Terminals/PC Docking Station/Port torsIndustrial/Instrumentation/Automation Control USB InterfaceUSB Modem/Wirele/Zigbee USB InterfacePackage Included:6Pin PL2303HXD USB to RS232 TTL Cable