Note: ①Driver Type：CDC/HID is a usb class driver；VCP driver provided by the manufacturer, which has multiple functions and high efficiency, it is recommended to be preferred; ②USB Configuration：The chip VID, PID, product description string, etc. can be set through a dedicated configuration tool; ③CH347 can also implement High-speed USB to SPI, USB to I2C, USB to JTAG, etc. It can be used for CPU debugger, FPGA downloader, programmer, etc.