To move files between your and a computer:
Connect the CK75 to your computer using a USB charge/
By default, the CK75 is in USB charging only mode.
To enable file transfers, swipe down from the top of the
Home screen to access the Notifications panel.
Touch the USB notification, and then select either File
transfers (MTP) or Photo transfer (PTP).
Depending on the Windows® operating system, either open
File Explorer or Windows Explorer.
Under Computer, click on CX75 NCF.
You can now copy, delete and/or move files or folders
between the computer and CK75 or a microSD card
installed in the CK75 as you would with any other storage
drive (e.g., cut and paste or drag and drop).