I.R.I.S. IRIScan + Readiris Pro 9. Maximum scan size: 215 x 355 mm, Scanner type: Sheet-fed, Optical scanning resolution: 300 x 600 DPI. Standard interfaces: USB. Bundled software: Readiris Pro 9. Weight: 410 g. Minimum hard disk space: 110 MB, Minimum RAM: 32 MB, Compatible operating systems: Mac OS X