Plustek OpticPro ST640, 216 x 297 mm, 3200 x 3200 DPI, 48 bit, Flatbed scanner, Black, CCD Plustek OpticPro ST640. Maximum scan size: 216 x 297 mm, Optical scanning resolution: 3200 x 3200 DPI, Input color depth: 48 bit. Scanner type: Flatbed scanner, Product color: Black. Sensor type: CCD. Maximum ISO A-series paper size: A4, Maximum scan area (ADF): 216 x 297 mm. Standard interfaces: USB 2.0