Inspiron 6400. Between the button for Media Direct and Power button are several symbols, (where the wi-fi symbol is, which is on). The numeral "9" is lit up (green). The "9" is in a tiny box with what looks like a curved handle on top. It is glowing green. Why is it lit up? What does it mean? (I'll bet the answer is so simple I'll really feel stupid)
Thank you for your help.