In short, I was disappointed with the performance of this key, advertised as wifi "n" is normally about 60-70 Mbit / S 'real' (about 7000ko / s). Compared to other wireless devices connected to my wifi n router, flow rates drop regularly and heavily, without reason, even at 5 meters from the emission point (flow down to 400 / 600K / sec). To make reading large video files network, so not very comfortable. The positive radius, Realtek chip inside is easily recognized, linux, OpenELEC on raspberry etc. For use on a light or pi for surfing, that should be enough for some. For those who want the "real" wireless N, it will look elsewhere.