This trick will save you huge amounts of time, and lots of fiddling with cables.
1. Make sure your phone and computer are connected to the same WiFi network
2. Go to Explorer –> at the bottom screen, FTP –> Start server –> There will be a link on the screen, started with ftp://xx.x.x.x:xxxx.
3. Go to your PC –> My Computer –> Paste the ftp link in the Computer address bar.
Now you’re all set to transfer file wirelessly from you computer to Mi Device.