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HP's professional-quality, plain-paper 640 Fax will simplify your everyday faxing and copying. Highlights include convenient one-touch buttons and easy-to-follow menus. Fax fast, at 6 seconds per page; copy at up to 4 pages per minute Get crisp black output at a low cost on plain paper Save time: program up to 50 speed dials, enjoy simple one-touch dialing; automatically redial when a number is busy, and automatically feed 10 pages at a time Store up to 50 pages; there's no need to miss a fax if you run out of paper or ink Load plenty of paper in the 50-sheet tray Get quick access to system setup reports, and tools via one-touch buttons and easy-to-understand menus Save space on your desk with the compact design Get peace of mind with the one-year limited warranty Product Specifications    Product NameFax 640 Plain Paper Fax Inkjet 50-Sheet InputProduct TypeFacsimile/Copier MachineHeight5.28"Width14.33"Depth10"Media TypePlain Paper Photo PaperFax TypePlain PaperProduct Model640Print TechnologyInkjetModem Speed14.4Number of Copies50Media SizeLegal - 8.50" x 14" Letter - 8.50" x 11"Certifications & StandardsEMC eUL Safety FCC Part 15 Third edition 1995 IC Telecom (CS-03) NOM-019-SCFI:1993 FCC Part 68 Telecom UL1050/CSA22.2 number 950Fax CompliantGroup 3Input Voltage110 V ACPower SourceAC SupplyStandard Memory1 MBTransmission Speed6 SecondAdditional InformationFax forwarding Junk fax barrier Remote retrieval Fax delayed sending Factory Serviced/Refurbished/Renewed to New Specs