The Xerox XDM31155M SA DocuMate 3115 has all the features you expect in a powerful desktop scanner such as a 20 page automatic document feeder ADF , 30 images per minute duplex scanning speed, and Visioneer OneTouch with Kofax VRS technology. Then at the push of a button, the DocuMate 3115 ejects from its docking station to become a full function mobile scanner. When undocked, the DocuMate 3115 can be powered by a second USB cable instead of an AC adapter, providing a true mobile experience for users on the go. The front feed slot accepts documents from letter legal A4 size to photos, receipts and plastic ID cards. br br b This item scans one page at a time. In order to get the 15 ppm, the dock is required which must be purchased separately. b