When a thick document or any bulky object needs to scan, the innovative cover can be lifted up to help flattening your item. As a result, an optimized image quality can be easily obtained since the item is more evenly lit. The FB10 is powered by the USB cable to the PC. No external power adapter and cords are needed! The LED illumination system not only saves power, it doesn't require any warm up time. The FB10 is ready to go as soon as you turn it on. It's fast too! It only takes 9 seconds to scan an A4 size document. Avision’s TWAIN user interface provides various image enhancement tools to enhance your image quality including auto crop and deskew, auto color detection, color matching, despeckling, color dropout and so on. Documents are scanned and ready to be used! In addition, the scanner comes with the convenient feature of multiple images cropping. With this feature, various sizes of documents such as photos, ID Cards, or business cards can be placed on the flatbed and the scanner is able to crop and create multiple images according to the original sizes of the documents in one single scan.