Despite somewhat laborious installation under Windows XP if the computer is already equipped with bluetooth, need to use the supplied dongle - we must follow the procedure: activate Bluetooth, add a device, switch on the keyboard, start the search ( by checking everything in Option tab: activate, authorize averture, display the icon), the keyboard is detected under the name "Bluetooth 3.0 Keyboard Macro Then simply check." No security key "(not able to in introducing, in any case) and the keyboard / pad is pressed. Good point: on a laptop computer or other accessory already equipped with a keyboard, you can use keyboard and pad in parallel, without any conflict. On Windows 7 or Android, detection and installation are immediate, with no need dongle (if the device is already bluetooth). The device is very small but the keys are free, the pad / navigation keys is very precise and very practical. Ultimate small detail: do not look for the traditional blue LED when the device is operating: one is entitled only to a Green (flashing for the research phase, continuously when the connection is established, green LED for caps, yellow LED for the low charge indicator)