Another approach, usually giving a faster transfer, is to unmount the SD card, remove it and put it into the computer card reader (or an external USB card reader) -- need a carrier for micro-SD/SDHC/SDXC, or course.
I transfered about 50 GB of videos into my 64 GB micro-SDXC I use in my Galaxy Tab 4 yesterday. It took on the order of an hour. When I tried to do it by connecting the Tab 4 to the computer's USB port the estimated time was 5 hours.