Fujitsu fi-5900C. Maximum scan size: 297 x 420 mm, Scanner type: Sheet-fed, Optical scanning resolution: 600 x 600 DPI. Auto document feeder (ADF) input capacity: 500 sheets. Standard interfaces: USB 2.0. Server operating systems supported: Windows Server 2003, Windows Server 2008, Bundled software: Adobe Acrobat Standard, Kofax VRS 4.2 Professional, ScandAll PRO, QuickScan Pro., Scan drivers: TWAIN, ISIS. Width: 533.4 mm, Depth: 533.4 mm, Height: 508 mm