Feature: 1. Superior Conversion Capability: CH340 is a USB bus conversion chip, supports USB to serial, USB to IrDA, and USB to printer interface conversions, reliable and professional. 2. Stable and Reliable: The module eliminates the use of transistors that lead to a dropout in conduction voltage and inability to reach 0V at low levels. Instead, it adopts a chip conversion solution, allowing low levels to reach 0V. 3. LED Indicators: Easy to use with power indicator PWR, and TXD and RXD indicator lights for intuitive operations. RTS and CTS positions clearly marked without the need for additional tools. 4. Multiple Guard: This adapter module is engineered for maximum guard, safeguarding against short circuits, over current, and high voltage, enhancing its longevity and reliability. 5. High Performance: Convenient USB to serial CH340 module supporting various systems, including for Win11 10 8 7, for Linux, and for Android. Hardware full duplex serial port with built in buffer area, supporting a range of baud rates from 50bps to 2Mbps. Specification: Item Type: USB Serial Module Material: PCB Voltage: 1.8V 2.5V 3.3V 5V Chip: CH340 Application: Support multiple systems, such as for Win11 10 8 7, for Linux, for Android, etc. Support Baud Rate Range: 50bps - 2Mbps. Package List: 1 x Module 1 x Wire