Question: how to connect logitech k750 wireless keyboard to unifying receiver?
Answer: To re-connect your K750: Download the correct version of Logitech SetPoint Mouse and Keyboard software from the K750 Downloads Page. Launch the Logitech Unifying Software (Start > Programs > Logitech > Unifying > Logitech Unifying Software). When your K750 is detected, you'll see a confirmation message, as shown below.