Kodak S2050 Document scanner 8.5 in x 118 in 600 dpi x 600 dpi up to 50 ppm mono up to 50 ppm color ADF 80 sheets up to 5000 scans per day USB 3.1 - Office Depot
Amazon.com: Brother Document Scanner - Duplex - Legal - 600 dpi x 600 dpi - up to 50 ppm (Mono) / up to 50 ppm (Color) - ADF (50 Sheets) - up to 5000 scans per Day - USB 3.0, Gigabit LAN, USB 2.0 (Host) : Electronics
Fujitsu ScanSnap iX1500 - Document scanner - Duplex - - 600 dpi x 600 dpi - up to 30 ppm (mono) /
Kodak i3250 600 dpi Document Scanner, Upto 50 ppm, specification and features
These 5 powerful Document Scanners will do 50 PPM (2020)
Kodak Picture Saver Scanning System PS50 - Document scanner - Dual CCD - Duplex - 8.5 in x 34 in - 600 dpi x 600 dpi - up to 50 ppm (mono) / up to 50 ppm (color) - ADF (50 sheets) - USB 2.0 - Walmart.com
HP ScanJet Enterprise Flow N9120 Flatbed Scanner - Document scanner, Duplex, 11.8 in x 34 in, 600 dpi x 600 dpi, up to 50 ppm (mono) / up to 50 ppm (color),