Xerox Duplex Travel Scanner - Sheetfed scanner - Duplex - 8.5 in x 32 in - 600 dpi - up to 100 scans per day - USB 2.0 The Xerox Duplex Travel Scanner scans without the need of AC power because it is powered through the USB port. Now you can quickly scan, file and store all of your documents, plastic ID cards, photos, articles and brochures no matter where you are.