High-Speed Monochrome Laser Printer. It features fast printing at up to 40ppm and automatic duplex printing for producing professional two-sided documents. Users can share the HL-5450DN with others on their network via its built-in Ethernet interface, and wirelessly print from their mobile device. Plus, the HL-5450DN provides flexible paper handling and uses a high-yield 8,000-page‡ replacement toner cartridge to help lower running costs.