The Samsung ML3051N prints up to 30 pages per minute; DPI: up to 1200 x 1200 effective resolution; CPU Processor: 400MHz; Print Language: PCL6 & PS3, IBM ProPrinter, Epson; Memory: 64MB (320MB Max); Paper Capacity: 250 sheet cassette, 50 sheet multipurpose tray; Duty Cycle: 35,000 pages per month; Paper support: 3" x 5" up to Legal; Toner: 4,000 pages standard (8,000 pages high yield); Connectivity: High-speed USB 2.0 and IEEE-1284 parallel, 10/100 Base-TX Ethernet; Misc.: Toner Save Button, increases toner capacity up to 40%, 1st page out in less than 9 seconds; Options: Manual Two-sided printing , 250 sheet second cassette, 10/100 Base-TX Ethernet. OS: Windows, MAC & Linux; Warranty: 1 Year Limited