The Plustek SmartOffice PN2040 is a duplex ADF and flatbed scanner, which ADF speed is 20ppm/40ipm with 200dpi in grayscale. The PN2040 makes document scanning easy and efficient, in addition, it is an easy to use network-based scanning solution for sharing documents in today's multi-location and global environment. Furthermore, you can use the network to connect when you install our driver package on your PC.