HP Scanjet 3970, 2400 x 2400 DPI, 48 bit, Flatbed scanner, Gray, A4, USB HP Scanjet 3970. Optical scanning resolution: 2400 x 2400 DPI, Input color depth: 48 bit. Scanner type: Flatbed scanner, Product color: Gray. Maximum ISO A-series paper size: A4. Standard interfaces: USB. Power supply type: AC, AC input frequency: 50 Hz, Input voltage: 200 - 240 V https://www.cnet.com/reviews/hp-scanjet-review/ Spec: Flatbed scanner, Desktop, Hi-Speed USB, 2400 dpi x 2400 dpi Good: Affordable; simple setup; includes practical software; produces clean scans. Bad: Bulky, dated design; unimpressive warranty. Bottomline: HPs Scanjet 3970 creates quality scans and is affordable to boot. Its a good choice for home use and basic scanning. http://www.computeractive.co.uk/computeractive/hardware/2044636/hp-scanjet-3970 A cut above the average sub-£100 flatbed.