A:

ScanSnap S1500 Sheetfed Scanner has a duplex scanning feature.

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A:

Please refer to the information below for the corresponding software/system requirements of mfr part no. PA03586-B005 and PA03586-B015 respectively:

PA03586-B005:
Software / System Requirements
Software Included ScanSnap Organizer 4.0, CardMinder 4.0, Adobe Acrobat 9 Standard, ABBYY FineReader for ScanSnap 4.0
OS Required Microsoft Windows 2000 Professional, Microsoft Windows XP, Microsoft Windows Vista (32/64 bits)


PA03586-B015
Software / System Requirements
Software Included Drivers & utilities, ScanSnap Organizer 4.0, CardMinder 4.0, Adobe Acrobat 9 Standard, ABBYY FineReader for ScanSnap 4.0, Fujitsu Rack2-Filer 5.0
OS Required Microsoft Windows 2000, Microsoft Windows XP, Microsoft Windows Vista, Microsoft Windows Vista (64-bit versions)


PA03586-B015 scan/element type is dual CCD, while that of PA03586-B005 is CCD.

In addition, mfr part no.PA03586-B015 has an Ultrasonic Double Feed Detection (Scanner Feature) and comes with a 6.6 ft. USB cable.