This module is an isolated USB-TTL converter. The interface uses a TYPE-C connector. Connect to a computer using a TYPE-C data cable. Signal processing utilizes a dedicated signal isolation chip. A power indicator light indicates operation status. Specifications: USB Power Supply: 5V via TYPE-C TTL Terminal Power Supply: 3.3V TTL Signal Level: 3.3V (TTL end supports 3.3V power supply and 3.3V TTL signal) Communication Protocol: Hardware based Baud Rate: Up to 25600bps Isolation Level: Power and Signal Isolation Isolation Voltage: AC300Vrms Electrostatic Discharge: ±8KV Temperature Range: -40°C to 80°C System Support: Supports hot swap. Compatible with Windows 98, CE, 2000, 2003, 2008, XP, Vista, 7, 8, 10, Linux, Mac OSX. Product Size: 23mm x 23mm x 7mm Interface Definitions: 3.3V: Power Positive Input RX: UART Serial Port Input TX: UART Serial Port Output GND: Ground TYPE-C: USB Interface Operational Note: The 3.3V pin on the TTL end supplies power to the module. The power indicator light must illuminate for operation. Color: Black Material: PCB and Electronic Components Package Contents: 6 x USB to TTL modules with adapter board, 6 x 4P cables, 12 x screws (M3 x 5), 12 x M3 nuts. Accessory colors may vary. Items listed are the only contents. Visual Note: Actual color may differ slightly from images due to lighting and display settings.