The DYMO LabelWriter 400 is a thermal label printer that allows you to create and print high-quality labels for your home or office. You can use it to print address labels, shipping labels, file folder labels, barcode labels, and more. The LabelWriter 400 prints up to 40 labels per minute using direct thermal technology, which means no ink or toner is required. The LabelWriter 400 is compatible with both PC and Mac computers, and connects via USB. You can use the included DYMO Label software to design and customize your labels, or use other popular software programs such as Microsoft Word, Excel, Outlook, and QuickBooks. With the LabelWriter 400, you can create professional-looking labels in minutes and save time and money on your mailing and shipping needs.