This module uses CH340 , which is a USB bus convert chip and it can be used for USB the serial interface.

Full speed USB device interface, conforms to USB Specification Version 2.0.

Support 5V and 3.3V source voltage.

This module is specifically designed for programming ESP32/other ESP chips (which uses GPIO0 and RTS for booting mechanism) and AVR MCU (which uses DTR and RTS for booting mechanism) such as Atmega328P, etc.