This means that the top row of Sony VAIO PCG-R505 charger keys is primarily for multimedia control instead of the usual F1 through F12 functions, although this can be switched around in the BIOS by the user. Other features of the keyboard include a proximity sensor (indicated by two red lights on the left monitor edge) for the keyboard backlight – walk close enough and the backlight will automatically turn on. Of course, users can choose to disable or enable this function as desired. Son...