CH341是一个USB总线的转接芯片，通过USB总线提供串口、打印口或者并口。

在串口方式下，CH341提供串口发送使能、串口接收就绪等交互式的速率控制信号以

及常用的MODEM联络信号，用于将普通的串口设备直接升级到USB总线。 -CH341 is a USB bus adapter chips, provided through the USB serial bus, printer port or parallel port. In serial mode, CH341 Send to provide serial-enabled, interactive, such as serial port ready to receive control signals, as well as the rate used to contact signal MODEM for the general upgrade of the serial device directly to the USB bus.