1.Plug the receiver into the USB port on your PC.                                                                                                                                                                   2.To change slides up or down-point the laser controller at the receiver and use the black arrow keys effective operating distance is up to 15m.                                                            

3.The middle button is a conventional laser pointer.                                                                 

4.The sllde changer is compatlble with:windows 98 SE/2000/ME/XP Linux and Mac OS.

5.Lt supports powerpoint,Excel,Word.Acrobat Reader etc.                                                    

6.Belt writing function. Caution: Please do not point the laser in the eyes                                                       

7.Customer's colour and logo are accepte