Datadesk introduced the Switchboard, a new extended keyboard with a twistit has several modules which can be moved around and swapped in and out of the basic keyboard case. So far Datadesk has a trackball module, a function key module that fits on either side of the main keys, and a macro key module that goes above the fifteen horizontal function keys. In addition from the Switchboard's chameleon abilities, it can hook to every Macintosh, including the Plus as well as all IBM-clones. That's flexible!
MacWEEK -- 17-Apr-90, Vol. 4, #15, pg. 53
Macworld -- Jul-90, pg. 109