Plustek OpticFilm 7400. Maximum scan size: 36.8 x 25.4 mm, Scanner type: film/slide, Optical scanning resolution: 7200 x 7200 DPI. Standard interfaces: USB 2.0. Weight: 1600 g. Certification: CE, FCC, UL/cUL, TUV. Minimum hard disk space: 500 MB, Minimum RAM: 512 MB, Compatible operating systems: Win NT/ME/XP/X64/2000/Vista 32/Vista 64 MAC 10.3.9 & higher including Leopard