KB-IMW103 Product instructions: 2.4GHz wireless RF keyboard Complicd system: Win7/vista/Windows xp/2000 the power supply of device: DC 3V AAA Battery. Outline, Dimensions and Material shall be shown on the individual drawing: Installation steps:(Refer to indication chart on the left) Connect Receiver For Laptop computer,plug the NANO Receiver into USB interface For Desktop computer,suggest use USB extension cable,Let NANOR eceiver work on your working platform to reduce the radiations from circumstance.