page_title: PowerBook Duo
section_title: PenLite
hierarchical_section_title: PowerBook Duo / Design / PenLite
caption_attribution_description: Apple PenLite prototype (1992)
context_page_description: The PowerBook Duo is a line of small subnotebooks manufactured and sold by Apple Computer from 1992 until 1997 as a more compact companion to the PowerBook line. Improving upon the PowerBook 100's portability, the Duo came in seven different models. They were the Duo 210, 230, 250, 270c, 280, 280c, and 2300c, with the 210 and 230 being the earliest, and 2300c being the final incarnation before the entire line was dropped in early 1997.
  Weighing in at a mere 4.1 pounds and slightly smaller than a sheet of paper at 10.9 in × 8.5 in, and only 1.4 in thick, it was the lightest and smallest of all of Apple's PowerBooks at the time, and remains one of Apple's smallest notebooks ever produced. Only the MacBook Air, the 13-inch Retina MacBook Pro and the 12-inch Retina MacBook weigh less, though they are wider and deeper. The Duo had the most in common with the original MacBook Air which only included one USB 2.0 port, one video port and one speaker port, but no ability for expansion.
context_section_description: The PenLite was an early tablet computer prototyped by Apple Computer in 1993 around the same time as the Apple Newton. It was not a PDA but rather a complete computer. The project was canceled in 1994 due to its similarity to the Newton.
  The PenLite was based on the PowerBook Duo and was meant to be a tablet-style addition, with a stylus as the input device. It was designed to be compatible with PowerBook Duo docks and accessories and ran the standard classic Mac OS.
caption: Apple PenLite prototype (1992)
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