Plustek MobileOffice S400, 8.5 x 35.8" (216 x 910 mm), 600 x 600 DPI, 48 bit, 20 sec/page, Sheet-fed scanner, Black Plustek MobileOffice S400. Maximum scan size: 8.5 x 35.8" (216 x 910 mm), Optical scanning resolution: 600 x 600 DPI, Input color depth: 48 bit. Scanner type: Sheet-fed scanner, Product color: Black. Sensor type: CIS, Scan drivers: TWAIN. Maximum ISO A-series paper size: A4, ISO A-series sizes (A0...A9): A4, A5, A6. Standard interfaces: USB 1.1 https://www.pcmag.com/article2/0,2817,2393173,00.asp The Plustek MobileOffice S400 ($120 street) is best appreciated as a highly portable scanner for people who need to scan single pages or short documents while on the go. As such, its strongest features are its small size, light weight, and ability to g... One-button scanning for common tasks, Scans directly to searchable PDF format, Highly portable, Simplex (one-sided) scanning only, No automatic document feeder, Rated at only 3 pages per minute, The Plustek MobileOffice S400 sticks to the basics, with a manual feed and simplex (one-sided) scanning only, all of which helps make it a lightweight, highly portable option. ...