Brother&reg; MFC-8640D Laser Flatbed All-in-One Duplex Prints: Up to 21 ppm Copies: Up to 21 cpm Scans: Up to 600 x 2400-dpi optical resolution Faxes: Up to 33.6Kbps Duplexing (2-sided printing) 250-sheet paper capacity Up to 50-sheet multipurpose tray standard 16MB base memory