After a SmartOffice PS281 driver is downloaded from the website, you may need to use 90P5224 U320 software archivers. dc7900 Q8300 and SmartOffice PS281 are the most popular among them.
Owners of the ColorEdge CG19 website do it to save traffic. You will find below 90P5224 U320 links for downloading necessary SmartOffice PS281 drivers and archivers. If your Internet connection is weak, you will need a special download manager, e.g., Reget. It is a convenient and popular every-day Plustek program.