Epson Epson GT-S50N. Scanner type: Document Scanner, Flatbed scan speed (b/w, A4): Monochrome: 25 Pages/min - Colour: 25 Pages/min, Monochrome: 50 image/min - Colour: 50 image/min. Auto document feeder (ADF) input capacity: 75 Pages. Standard interfaces: USB 2.0 Type B