Labtech ps2 wireless desktop
Usually, the connect procedure for Labtec is, that you press the small connect button on the receiver, (which on some models, then starts blinking).. Next, you press the connect button, on the bottom of either the mouse, or keyboard.. then repeat this, for the remaining unit.
Note: You might have to connect the PS2 receiver BEFORE starting the PC, and also might have to install the drivers, to get the multimedia-keys to work ! Good luck!