Weight and Dimensions (US): 0.29 lbs, 1.3" H x 2.4" W x 4.2" D
Weight and Dimensions (Metric): 132 g., 3.3 cm H x 6.1 cm W x 10.7 cm D
History: Apple introduced the Apple Desktop Bus (ADB) with the Apple IIgs. This technology became standard on every Mac for the next 15 years for input devices.