Feature:1. Safe and Reliable: The USB to UART TTL cable features multiple guards against short circuits, over current, and high voltage, ensuring safe and reliable usage.2. RTS CTS Functionality: With reserved RTS and CTS positions, users can easily determine if the serial cable is working properly even without additional instruments.3. Wide Compatibility: Supporting baud rates ranging from 50bps to 2Mbps, with dual voltage options of 3.3V and 5V, this cable offers versatility and flexibility for various applications.4. Compatibility: The STC downloader flashing module is compatible with for XP, for Win 7, 8, 10 systems, providing convenient firmware updating and programming capabilities.5. Plug and Play: This USB to UART TTL serial adapter cable is made of premium PCB and PVC, plug and play, USB 2.0 compliant, making it easy to set up and connect.Specification:Item Type: USB to UART TTL Serial CableMaterial: PCB, PVCVoltage: 3.3V, 5VSupport Baud Rate Range: 50bps to 2Mbps.Package List:1 x USB to UART TTL Serial Cable1 x Wire1 x User Manual