The Apple Desktop Bus Mouse II transformed the angular blocky designs to a curved teardrop shape. This basic shape is still used in mouse designs today by Apple and others. This mouse was included with Macintosh computers from 1993–1998 when the original iMac was introduced.
The Apple Desktop Bus Mouse II matched the platinum gray color of Macintosh computers at the time. However, a black version of this mouse was included with the Macintosh TV and the Performa 5420 (sold only in Europe and Asia).
Four different variations of the Apple Desktop Bus II Mouse are in my collection. The three platinum gray color versions have different color trackballs, and one has no label (with the product numbers cast directly into the plastic). The fourth example is the black Apple Desktop Bus II Mouse included with the Macintosh TV.
The Apple Desktop Bus Mouse was redesigned and named for its new ADB connector that was used in Macintosh computers from 1986–1998. This mouse featured low-profile blocky design with a flattened pentagonal side profile and a flat rectangular (slightly trapezoidal) bottom. It had a single button and tracked using a rubber ball.
I have three different variations of the ADB Mouse in my collection. One has a dark ring supporting the trackball, another has a light ring matching the color of the body of the mouse, and a third model uses a ring with an arrow.
The ADB port was a round, 4-pin plug that was used on the Apple IIGS (1986), Macintosh computers, and licensed for use on NeXT computers. The Apple Desktop Bus system was created by Steve Wozniak as a single connector for input devices that was inexpensive to produce. The Macintosh II and Macintosh SE were the first Macintosh computers to use the ADB port.