Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bad software, no support

The software that accompanies this scanner (PrestoPageManager) is junk. When converting batches of images to .pdf files, the software randomly omits pages. Contacting plustek doesn't help, as they do not answer any e-mails. Also, it is difficult to copy books that do not have wide margins. The scanner is better for books than normal flatbed scanners, but one must still bend the spines in order to scan all of the text. The controls of the scanner are not easy to learn. Don't buy this.