OKI OKIFAX 4580. Type: Inkjet, Fax resolution: 600 x 600 DPI, Modem speed: 33.6 Kbit/s. Gray scale levels: 64 levels of grey. Standard input capacity: 100 sheets, Auto document feeder (ADF) input capacity: 20 sheets. Standard output capacity: 30 sheets. ISO A-series sizes (A0...A9): A4