How to connect a computer with a data cable to transfer files?

The mobile phone is connected to the computer with a data cable to transmit files. The operation method is as follows:

1. Connect the mobile phone to the computer, and select the file transfer via USB from the drop-down box, and select the file transfer from the pop-up options;

Second, open this pc and select the connected mobile phone;

3. Click to open the internal storage device and transfer the mobile phone files to the computer here.