Windows 7, like other Windows operating systems, requires a driver to communicate with devices that use the CH340 chip. Without the CH340 driver, your Windows 7 system will not be able to recognize the device, and you will not be able to use it.
Installing and Troubleshooting CH340 Driver on Windows 7: A Comprehensive Guide** driver ch340 windows 7
The CH340 driver is a software component that enables communication between a Windows operating system and devices that use the CH340 chip. The driver allows Windows to recognize the device and establish a serial connection, enabling data transfer between the device and the computer. Windows 7, like other Windows operating systems, requires