Duplex Scanning on HP Color LaserJet Pro MFP M281fdw - HP Support Community - 6443718
HP® Scanners
HP Scanjet Pro 3500 f1 Document Scanner - Duplex, Flatbed/ADF, 2-line LCD, 5 buttons, 1200x1200dpi, 25ppm, ADF (50 sheets), 3000 scans per day, USB 3.0 - L2741A#BGJ at TigerDirect.com
HP® Scanners
HP ScanJet Pro 3000 S4 Sheetfed Scanner 600 dpi Optical 40 ppm Mono 40 ppm Color Duplex Scanning USB - Office Depot
L2747A#BGJ - Hp Scanjet Pro 2500 F1 Flatbed Scanner | DirectDial.com
HP Color LaserJet Pro MFP M283fdw
How to scan double-sided /two-sided documents - HP Support Community - 7473910
Amazon.com: HP ScanJet Pro 4500 fn1 Network Scanner (L2749A) : Office Products