Green-utech 6ft Usb Ft232rl Ttl-232r-5v-aj Usb Programming Cable 3.5mm Stereo Jack Support Windows7/8/mac Etc FBA shipment, the shipment from FBA warehouse in America. the shipment time about 2-3 days, USB TTL UART 5V level cable It is a 5V Level TTL signal cable (Not RS232). there is a FTDI chipset on PCBA assembled.If you don't know how to use it, please don't buy it PINOUT: Tip- TX (device-RX), Ring-RX(device-Tx), Sleeve-GND. please check the pinout , and buy it carefully . Chip: FT232RL, driver download: www.ftdichip.com It is TTL 5v Signal Cable, Non RS232 Signal Level Cable. If you don't know how to use , and which device is workable for this cable, please don't buy it .