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: PCBVoltage: 1.8V 2.5V 3.3V 5VChip: CH340Application: 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 Module1 x Wire