Features 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