Fujitsu ScanSnap S300 - World's Smallest A4 Duplex      ADF Scanner* - Up to 8 double sided color pages    (16 images) per minute - "One Touch" Scanning that captures    both sides

Fujitsu ScanSnap S510 - Scan at 18 colored double-sided    pages per minute    (36 images per minute) - 50 page continuous scan capacity    Automatic Document Feeder (ADF) - ABBYY FINEREADER for ScanSnap   3.0,allows you to scan to MS Word/   Excel / Powerpoint