This is hopefully a very simple and probably quite strange sounding question. I have an Optimus 17.3 inch laptop and I've recently noticed it has 3 green lights on at the front, whereas I always thought it was just 2 before. Can anybody please en'light'en me as to what these lights are for please and is it likely that 2 has become 3? Because of my physical disability I can't actually lift the laptop up to check for myself. Thanks in advance and Happy New Year!