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When you've put the slimline in the slot and flipped a switch on the front of the cradle , the former 's hard disk appears as a USB storage device or additional drive letter for the big PC , making drag-and-drop file transfer a snap . The ability to drag-and-drop files to a CD or DVD for backup makes the program as easy as sending a file to a floppy disk . On Mount Rainier CD-RW and DVD + RW drives you can drag-and-drop files to the RW disc and the real formatting of the disc is done in the background ( invisible to the user ) . They can edit a PowerPoint presentation , drag-and-drop files to any computer , and record the session as a group .