Pictures on the left show - top to botton - the Receiver, the Connect Button on the Keyboard and the Label on the Keyboard. More recent Wireless Mouse / Keyboards do not have a scanning receiver as the devices are locked together so no setup is required. Other keyboards / mice with a USB Receiver may use a similar method. You can push buttons as much as you like but it will not work until you do it in the correct sequence. With proprietary Microsoft High Definition Laser Technology, this mouse. While pressing the buttons is mentioned in the little book that comes with your Keyboard / Mouse Combo also various web sites none of them mention the sequence of the operation. Microsoft Wireless Laser Keyboard 6000 V2.0 With USB PS2 Receiver intellimouse. When the receiver sees the remote device the scanning instantly stops indicating that it has seen the remote device (keyboard or mouse). You may have to press it a few times but keep your eye on the receiver scanning lights. Method: Press the button on the radio receiver to get the green lights scanning – while they are scanning press the ‘Connect’ button on the bottom of the keyboard or mouse. Example is a Microsoft Wireless Laser Keyboard 6000 V2.0 Setting up a Connection Between a USB Receiver and a Wireless Keyboard.