Macintosh PowerBook Duo 250

At A Glance

The Macintosh PowerBook Duo 250 offered high performance in a 4-pound package. It included a CPU, full-size 16-gray-level supertwist display, keyboard and trackball, battery, and disk storage and could be transformed into a desktop Macintosh by attaching it to an optional Duo Dock or MiniDock. Read the original specifications of the Macintosh PowerBook Duo 250 at the Apple support site.

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Original Specifications

  • Features:
    • Processor: 25-MHz 68030 microprocessor
    • Memory: 4MB RAM, expandable to 24MB
    • Weight: 4.2 lb. (1.9 kg)
    • Expansion: Docking connector, connectors for internal modem and RAM
    • Display: Backlit Supertwist, 16-level gray scale, 640 by 400 pixels
    • Battery: Nickel hydride batteries for approximately 2 to 4.5 hours of use
    • System software: System 7.1, with multitasking, file sharing, Balloon Help, and TrueType fonts
    • Networking: Built-in AppleTalk networking, file sharing without dedicated server
    • Compatibility: Macintosh, MS-DOS, OS/2, and ProDOS floppy disk formats

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