Plustek SmartOffice PL 2550, 8.5 x 11.7" (216 x 297 mm), 600 x 600 DPI, 48 bit, 24 bit, 8 bit, 1 bit Plustek SmartOffice PL 2550. Maximum scan size: 8.5 x 11.7" (216 x 297 mm), Optical scanning resolution: 600 x 600 DPI, Input color depth: 48 bit. Scanner type: Flatbed & ADF scanner, Product color: Black. Sensor type: CIS, Daily duty cycle (max): 1500 pages, Scan drivers: TWAIN. Auto document feeder (ADF) input capacity: 50 sheets. Maximum ISO A-series paper size: A4, Scanning media types supported: Card stock, Plain paper, Auto Document Feeder (ADF) media weight: 50 - 105 g/m²