Fast and Powerful Time is money. So Samsung supplied the ML-5515ND/6515ND with a dual core 600MHz processor and Gigabit LAN support. You’ll experience fast large-document print times, as well as performance usually associated with enterprise-level printers. Print speeds are a fast 55 ppm/65 ppm, respectively, and First Page Out Time (FPOT) is less than 8 seconds. Ready to Work, and Keep Working With an impressive duty cycle of up to 300,000 prints per month, you can count on your Samsung printer to keep working. Efficient Paper Handling The ML-5515ND/6515ND printers can handle your biggest jobs. They come standard with a 520-sheet cassette and 100-sheet multi-purpose tray, and you have the option of adding on either four more cassettes for a total input capacity of 2,700, or add two additional cassettes with a 2,000-sheet high-capacity feeder, for a total input capacity of 3,660 sheets. The optional finishers add convenience, as does built-in duplexing. And the ML-5515ND/6515ND printers can accommodate envelopes, card stock and other special media, all from the main tray. Speed Mono  Up to 55 ppm to Up to 65 ppm Resolution  Up to 1,200 x 1,200 dpi effective output First Print Out Time (Mono) As fast as 7.8 sec. As fast as 7.8 sec. Emulation  PCL5e, PCL6, IBM ProPrinter, EPSON, PostScript3, PDF Direct v1.7, XPS v1.0