Iphone 12 does not have a usb port

Hello kodac, The USB port needs to be on your Windows PC machine. Use the Lighting to USB cable and connect to your PC.

Back up your iPhone, iPad, or iPod touch in iTunes on PC - Apple Support

lightning is what your phone has. USB is what the computer has.

Hello kodac, No there is no Lightning to Lightning connector cable. To connect your Apple device to a PC that is using iTunes for Windows use the Lightning to USB connector. See this Apple Store link for the cable to use.

Lightning to USB Cable (1 m) - Apple