1.6 ft USB to TTL 5V 4pin serial FTDI cable for direct connection to a microcontroller UART or I/O pins. 4pin TTL serial interface with VCC, GND, TX and RX for 5 V logic, enabling straightforward wiring to microcontroller UART or I/O pins. FT232RL based design offers reliable USB to serial conversion with broad compatibility and driver support across Windows, macOS, and Linux. Low power operation: about 15 mA operating supply current and a USB suspend current of approximately 70 uA. Note that during suspend mode, the current drawn by the application should not exceed 2.5 mA to remain USB compliant. Compact, longangle connections and standard USB interface make it suitable for a wide range of projects and development boards. Use scenarios Microcontroller development and programming: connect to Arduino, STM32, ESP32/ESP8266 and other MCUs for firmware uploading and serial monitoring. Sensor data logging and debugging: read sensor data or module output on a PC or laptop via USB while testing hardware. Hardware testing and troubleshooting: serve as a simple UART console for debugging and validating embedded designs in a lab environment.