The DYMO LabelWriter 400 Duo prints all styles and sizes of paper labels including envelope labels, pakage labels, folder labels, name badges and postage stamps in mere seconds. Even print Dymo's popular D1 labeling tapes. Connecting to your systems USB port, it prints directly from your favorite programs like Microsoft Word, Outlook, WordPerfect, QuickBooks, ACT! and many others. Printing at 50 labels per minute, the LabelWriter 400 Duo provides sharp 300 dpi prints thanks to its whisper quiet thermal ink technology.