Dell KM636 Wireless Keyboard and Mouse documentation failure

Lack of adequate start-up documentation for the mouse and keyboard.  Dell KM636 Wireless Keyboard and Mouse Quick Start Guide instructions and diagrams failed to show on/off switch requiring activation.  I spent hours and forced to drive more than 100 miles for hands-on technical support because my computer was not responding to my installation of wireless keyboard.  Discovered that the keyboard has an on/off switch on the upper rear edge of the keyboard, hidden from consumer view.  In forty years of computing, I have never seen a keyboard requiring an activation switch.  Nothing was mentioned in the Keyboard and Mouse Quick Start Guide.  Three technicians needed to be contacted, many hours wasted, before one of them found the tiny, unmarked on/off switch to properly install the keyboard.  Dell needs to revise the Quick Start Guide.