10-4PRINTER SPECIFICATIONSMemory capacity (standard) Standard 128MBDIMM slots for additional memory One (256 MB memory can be mounted.)Page description language PCL6, PCL5e, PS3 emulation*Resident font For PCL: Outline fonts: 80Barcode fonts (option): 28Bitmap font: 1PostScript compatible fonts (option): 136Interface USB1.1 (Windows98/ME/2000/XP/Server 2003/Vista)USB2.0 (Windows2000/XP/Server 2003/Vista)LAN connection 10Base-T/100Base-TXSupported protocols: IPX/SPX, TCP/IP, EtherTalk, NetBEUIOperating system IBM PC/AT or compatible computer: Windows® 98/Me, Windows NT ® 4.0(ServicePack5 or later), Windows® 2000 Server/Professional, Windows®XP Professional/Home Edition, Windows Server® 2003, Windows ® VistaMacintosh series*: Mac OS 9.0 to 9.2.2, 10.1.5, 10.2.8, 10.3.9 and 10.4to 10.4.8Continuous print speed im3512: 35 pages/min,im4512: 45 pages/min.(Print speed during printing of the second sheet and following sheetswhen using 8-1/2" x 11" (A4) plain paper and performing continuous one-sided printing of the same page; excluding use of offset output.)Resolution Data processing: 600 x 600 dpiPrinting: 600 x 600 dpi, 1200 dpi equivalent x 600 dpi* An optional PS3 expansion kit is needed.Some discrepancies may exist in the illustrations and content due to improvements to the machine.