Attention to the release! This keyboard comes in MB110F / A used up Mac OSX 10.5 and MB110F / B used from 10.6. What is the version proposed here? It seems this is the / B, which explains some of the negative comments; poor information given on Amazon.com because certainly received as such! Thank you in advance to Amazon more details on the proposed model. Other than that, once you have the right model, it is only happiness! Beautiful, elegant, small, light, quiet, everything is there, consistent with the legend of the firm Cuppertino! But this one (legend!) Is in no way usurped ;-)