product description : epson scanner scanner type : flatbed color image scanner photoelectric device : epson color matrixccd 12-line sensor resolution : optical : 4800 dpi with epson matrixccd hardware : 4800 x 9600 dpi with micro step drive technology maximum : 12,800 dpi with software interpolation effective pixels : 40,800 x 56,160 (4800 dpi) color hardware bit depth : 48-bit internal/external grayscale hardware bit depth : 16-bit internal/external optical density : 3.2 dmax transparency unit : 35mm transparency adapter, 6 negatives/4 slides capacity buttons : 4 buttons; scan, e-mail, copy and pdf maximum read area : 8.5 x 11.7 inch interface : hi-speed usb 2.0/1.1 reliability : mcbf - 10,000 cycles sys req : win : 215mb available hdd space, intel pii 450 mhz+, 512mb ram, usb 2.0/1.1: win 2000 pro, xp home ed/xp professional/ xp professional x64 ed, windows vista, available usb connection mac : 200mb available hdd space, powerpc g3 400 mhz or intel based cpu, usb 2.0/1.1: mac osr x 10.3.9 10.5.x available usb connection, 128mb ram dimension(h x w x d) : 56 x 429 x 279 mm weight : 2.8 kg