Epson GT-S55N. Maximum scan size: 216 x 914 mm, Scanner type: Sheet-fed, Optical scanning resolution: 600 x 600 DPI. Standard input capacity: 75 sheets. Scanning media types supported: Card stock, Plain paper, Auto Document Feeder (ADF) media weight: 45 - 200 g/m². Standard interfaces: Ethernet, USB 2.0. Mac operating systems supported: Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Server operating systems supported: Windows Server 2003, Windows Server 2008, Windows Server 2008 R2