Whether your output is continuous multi-part forms or fine business correspondence or combinations of both you'll find your solution in the Dual 9-pin ML620/621 or the 24-pin ML690/691 dot matrix printers. They handle the printing needs of the most demanding environments including point-ofsale, automation and utility applications such as wholesale or retail sales counters, financial departments, manufacturing and warehousing. Yet they also produce letter-quality type and high-resolution graphics for the office and executive suite.Print Color: MonochromeMaximum Mono Print Speed (cps): 700 cpsMaximum Print Resolution: 288 x 72 dpiNumber of Pins: 9-pinStandard Memory: 128 KBParallel Port: YesUSB: YesMedia Type: Plain PaperMedia Type: Cut SheetMedia Type: Roll PaperMedia Type: Single SheetMedia Type: Multiple Part FormMedia Type: Continuous FormMedia Type: EnvelopeMedia Type: Card StockMedia Type: LabelMedia Size: Custom SizeMedia Size: Letter - 8.50 x 11"Duty Cycle: 28000 pages per monthForm Factor: DesktopColor: WhiteColor: GrayHeight: 7.5"Width: 17.2"Depth: 14.8"Weight (Approximate): 16.98 lbPlatform Supported: PCGreen Compliant: YesGreen Compliance Certificate/Authority: ENERGY STARLimited Warranty: 3 Year"