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Specifications I/O Devices - 10
I/O Devices
Keyboard
Built-in keyboard with standard Macintosh layout
63 keys domestic; 64 keys ISO
3.0 mm travel; 18 mm vertical pitch, 18.63 mm horizontal pitch
Two-level tilt adjustment
Trackball
30 mm diameter, dual button
Apple Desktop Bus (ADB) interface
Microphone
Electret, omnidirectional
Output voltage of 4 mV, peak to peak