Smart Label Printer lets you quickly print crisp, clear and legible labels at a 300 dpi resolution. Easy-to-load design lets you simply drop in a new roll, and you're ready to print. The included SLP software, supporting Microsoft Excel, Outlook, Access and Word, gives you the tools you need to create customizable labels up to 2-1/8" wide and 7" long. Direct thermal technology eliminates the need for ink, toner or ribbons. Smart label printer is compatible with the SLP-Tray accessory (sold separately) to tackle your volume shipping needs with cost-effective, bulk shipping label rolls. Printer is designed for use with computers running Windows, Mac OS or Linux operating systems.