perixx px3000 keyboard knob?

the day b4 2moro

Honorable
Dec 25, 2013
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hi guys, just a wondering of mine, but i bought a perixx px 3000 ages ago and at the top right it says 'gaming mode' it looks like it is supposed to light up, making me wonder if there is a gaming mode i do not know about. does anyone know?
also it has this knob on the top right for volume control, but if you press it in, it changes the keyboards back light to red for about 10 seconds then it reverts back to normal, with no other obvious changes. is this anything?
i just want to know out of curiosity but also to make sure i am getting my moneys worth
thanks in advance!