Solu USB To RS232 TTL PL2303HX Auto Converter Module Converter Adapter For Arduino// PL2303 USB to Serial TTL UART Module Converter Adapter// PL2303HX PCB USB 2.0 to TTL UART Serial Converter Module DC3.3-5V About us (Solu), Professional factory of circuit boards, welcome to our store for more choices with best price. What we pursue is your satisfication of our service, not just for our goods.For any reason you are unsatisfied with our product at any time, simply contact support for exchange or refund. we will reply you about any question you ask within 24 hours Usually, you will get it actually in 9~19 days, If you are in the USA and the item is NOT Fulfilled by Amazon. the item will be sent to you by USPS with shipping information from China. The estimated delivery time offered by Amazon is not the real time. Your patience is highly appreciated. Hope you will receive your item soon and enjoy using it. Simple UART communication,commonly used UART debugging tools in supper terminal.Burn write STC MCU,NXP MCU,renesas MCU,NEC MCU and so on USB signal transferred to TTL signal,may be used by electronic enthusiasts cellphone,XBOX360,GPS serial communication, vehicle inspection and test,DVD flash and so on