1) Download and install CP210x_Windows.exe 2) Go to directory C:\SiliconLabs\MCU\CP210x_SDK\Customization\AN721SW_Windows\CP210x_InterfaceLibrary 3) Copy ManufacturingDLL and RuntimeDLL, then paste in Rust-Project/src/dlls.
CP210x_Windows.exe
C:\SiliconLabs\MCU\CP210x_SDK\Customization\AN721SW_Windows\CP210x_InterfaceLibrary
ManufacturingDLL
RuntimeDLL
Rust-Project/src/dlls