The Epson WorkForce ES-400 is a high-performance document scanner that offers fast and efficient scanning for your computer. It features a duplex scanning capability, allowing you to scan both sides of a document simultaneously, saving you time and effort. With its advanced paper feeding system, the scanner can handle various types of documents, including receipts, business cards, and even long documents up to 240 inches. The ES-400 also comes with powerful software that allows you to easily convert scanned documents into editable text, organize files, and even send them directly to cloud storage services. Whether you're a business professional, student, or home user, the Epson WorkForce ES-400 is a reliable and versatile accessory for your computer scanner setup.