Silentwriter® Model 97fx - 10ppm, controller 68000 @ 16.7 MHz, paper input - letter and legal  cassette & envelope feeder, includes factory installed PostScript fax, interface ports include AppleTalk, parallel, serial, RS-232 with automatic interface monitoring (AIM) for convenient print sharing, 35 scalable fonts, 14 bitmap and 8 HP LaserJet fonts, PostScript™ level 2, HP LaserJet III w/HPGL (PCL level 5) emulation, standard 2MB - expandable to 5M, connects to standard analog phone line, 300x300 dpi with sharp edge technology.