The Plustek Opticslim 2700 is a Light, Slim type and has no extra power adapter scanner. Scan letter-sized documents in just 3 sec (Color Mode, 300 dpi, A4). It features Optical Character Recognition Function. Convert images to text documents created by the scanner into searchable PDF or PDF image files. It comes with image processing, the software can Auto Rotate, Deskew, and Crop image. Help users save time and get a better picture. With 5 one-touch buttons make scanning directly to computers, emails, or PDFs simple. The OpticSlim 2700 just press the one-touch button and every scan are easy and fast! Only one USB connection is required for power and connection to the computer and zero warmup time is needed. It has specially designed hinges with a lid that accommodates bulky books or documents. It supports Windows XP / Vista / 7 / 8 / 10 and support TWAIN. It has a 1-year warranty.