100% brand and Fast and stable signal transmission for reliable USB to TTL serial communication with microcontrollers and embedded projects Upgraded USB serial port to TTL module with a more stable chip; supports dualpurpose 3V and 5V logic levels for broad compatibility Compact and lightweight design; easy to carry for outdoor use, fieldwork, or onthego testing Clear function and compatibility highlights: USB to TTL conversion, standard serial communication, suitable for 3V and 5V logic boards Practical use scenarios Program and debug microcontroller projects (such as Arduino and other development boards) via USB serial connection Serial data communication and logging for embedded sensors during field tests or in the workshop Firmware flashing and configuration of development boards or small electronics that require TTL serial access