The Epson WorkForce ES-400 is a high-performance document scanner that is designed for fast and efficient scanning. It features a fast scanning speed of up to 35 pages per minute and can scan both sides of a document simultaneously. The scanner has a large automatic document feeder, which allows for easy scanning of multiple pages. It also comes with advanced features like automatic image enhancement, OCR (Optical Character Recognition), and wireless connectivity. The Epson WorkForce ES-400 is compatible with both Windows and Mac operating systems and is perfect for busy offices and workgroups.