Bought to perform scans of sheets printed in black and white this suits me perfectly. Moreover, it is compatible with my HP Scanjet 4500C and works great under linux with Xsane. It is the indispensable complement of Auto Multiple Choice Software (CMA). By cons, scan my pictures 9 * 10 * 13 or 15 is a total failure because the smaller pictures inevitably leave a slight angle and the quality is impaired by the appearance of scanning lines when the resolution is important. Ideal for documents, not recommended for photos.