The device works flawlessly and online. The maximum of 4 devices are found quickly, in my case a Philips TV, a Festplattenreceiver of cable Germany (Sagemcom), the Bose SoloTV Soundbar and of course the Xbox One. As an action program put together all 4 devices, so that they will all be turned on with a (!) Key is pressed simultaneously. Using the function keys then you switch between the devices back and forth, I want to make the sound of the Bose loud I have to select them in advance of a button, I want to change the channel on the receiver I have to switch. All this happens without any problems and after a few minutes of natural hand (literally). The key assignment is done automatically when ordering, but can be customized. However, the default is already completely logical and understandable.
The control of the Xbox One works also terrific, with the arrow keys to toggle between the "tiles" back and forth and activated it with "OK". Using the Back button to get always a step back. Games can thus certainly do not control, but for traditional media functions replaces the 300i then completely the controller.
Another advantage of the 300i is that it does not have as their successors with an LCD or touch screen, which has an extremely positive effect on the battery performance.
UPDATE: the Bose SoloTV Soundbar compatible in continuous operation is not well with this remote control. After a few times you can no longer turn comes after a reboot again. Before I came to realize the equipment has been repaired at Bose, allegedly exchanged a board. But had no effect on it. So for the Bose Soundbar this remote is obviously unsuitable. Otherwise, continue to top.