D-trans U-disk / U-disk

Common U-disk can only transport data by PC or Mac.But the D-trans U-disk can directly transport data to another U-disk without the help of PC or Mac,which making it's more convenient to copy files from one U-disk to another.After inserting one U-disk in another you can do as follows:
1) Selecting the file on the screen of U-disk.
2) Dragging the file to another U-disk.
3) Releasing and the file has been copied to another U-disk.