DescriptionSupport OSD parameter adjustment and setting of f3f4 cc3d naze32 flight controlArduino Pro Mini board comes without built-in USB circuitry, so an off-board USB-to-TTL serial adapter/Converter must be used to upload sketches. The FTDI USB 3.3V 5.5V to TTL Serial Adapter/Converter Module is an ideal choice for this purpose.Chip: FT232RLDraw out all signal port of FT232RL chipRXD / TXD transceiver communication indicatorUSB power supply, can choose 5V or 3.3V, set by jumperWith over current protection, using 500mA self-restore fusePin definition: DTR, RXD, TX, VCC, CTS, GNDPitch: 2.54mmSize: 36 x 18mm (L x W)Interface: Mini USB