Canon imageCLASS MF6540 Duplex All-in-One Printer Up to 24 pages-per-minute laser output Duplex versatility - 2-sided copying, printing, and color scanning 500-Sheet cassette, 100-sheet multi-purpose, and 50-sheet auto-doc feeder paper handling Built-in Ethernet port for network printing Single Cartridge System - for easy toner maintenance and lower costs