Step1: Go to [Transfer]feature.
For Win users, find the feature in [Toolbox].For Mac users, find Transfer at the left bar.
Step2: Connect your mobile device.
Step3: Click on + Add Files button to add files. To add folders, click the ▼icon next to + Add Files and select the Add Folders button.
Step4: Click Transfer All button to transfer all files into your connected device.
The transferred files then can be found on your device's default Videos/Music app.