System Requirements: Apple Macintosh computer with ADB port
Power: n/a
Weight and Dimensions (US): 2.25 lbs., 1.75" H x 16.5" W x 5.6" D
Weight and Dimensions (Metric): 1 kg, 4.4 cm H x 41.9 cm W x 14.2 cm D
History: In 1986, Apple released its first ADB keyboard. The ADB port was designed only for input devices and therefore more efficient than the serial port.