Transfer files between an Android device and a computer by using a USB cable. Although Windows operating systems have native support for the process, you must download an application to transfer files to and from a Mac computer.
If you're using a Windows computer, make sure your Android device is unlocked, and connect it to your computer with a USB cable. On the Android device, swipe down from the top of the screen to reveal the notification center. Tap USB For... and select Transfer Files (MTP). This opens the File Transfer window on your computer. Drag and drop files to initiate the transfer. Make sure you safely eject your Android device, and pull the USB cable.
On a Mac computer, you must first download and install the Android File Transfer application. Open the application once it's installed, unlock your Android device, and connect it to the Mac with a USB cable. Pull down the notification center, touch USB For... and then Transfer Files (MTP). Drag files to and from the Android File Transfer window to begin the transfer. Eject the Android device, and unplug the USB cable.
To safely eject devices on Windows, click the Safely Remove Hardware icon in the notification area on the taskbar. Then, select the device, and wait for Windows to confirm the action. On a Mac computer, simply drag the device into Trash. Alternatively, click the device, and press Command+E.