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. Item Type: USB to UART TTL Serial Cable Material: PCB, PVC Voltage: 3.3V, 5V Support Baud Rate Range: 50bps to 2Mbps 1 x USB to UART TTL Serial Cable 1 x Wire 1 x User Manual