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The Kensington Turbo Mouse is a series of trackballs for Macintosh. Its PC counterpart has been marketed as the Expert Mouse.[1]


Classic ADB versions[]

The Turbo Mouse dates back to the late 1980s and was one of the earliest ADB trackballs, designed to complement Apple Computer's first ADB keyboards. It featured a 2-button design and became the bestseller of its category.[2] The 57 mm trackball size matched that of a regulation pool ball and could be replaced with an eight-ball.[3] Prince was known to use this model for digital music composition.[4] The last iteration of the ADB-only Turbo Mouse in the 1990s was version 5.0, which was updated to a 4-button configuration. It could support any Mac with an ADB port that could run System 6.0.7 or later.[5]

USB and wireless versions[]

A USB version was introduced in 2000 with support for Mac OS 8.1 and later. It also included a legacy ADB port.[6] However, the MouseWorks software was not updated for Mac OS X until 2001, which was necessary to support more more than two buttons.[7] This was superseded by the Turbo Mouse Pro in 2002, which offered a choice of USB or RF wireless support.[8]


  1. Mice and trackballs, Kensington. Archived 1997-01-06.
  2. Retro Scan of the Week: Kensington Expert Mouse by Benj Edwards, Vintage Computing and Gaming. 2009-05-25.
  3. Vintage Kensington 8 ball Turbo Mouse Trackball for Mac Model #62360 3.0, PicClick. Accessed 2021-07-17.
  4. “I Am #Transformed” by Anil Dash, Medium. 2016-08-04.
  5. Turbo Mouse 5.0, Kensington. Archived 1997-01-06.
  6. Turbo Mouse USB/ADB Trackball for Mac, Kensington. 2000-12-05.
  7. Kensington Releases MouseWorks 1.0 for Mac OS X, TidBITS. 2001-05-11.
  8. Turbo Mouse® Pro - Wireless, Kensington. Archived 2002-10-03.

External links[]

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