I can't help you with your particular keyboard. But I have a wireless keyboard and got fed up with not knowing if the 'Caps Lock' was on or not. I found a little item on the net called 'KEYBOARD LED's' It works great.
Please join me in congratulating IronFly who is the first Acer Community Member to achieve the rank of ACE Pathfinder. IronFly has shown a consistent willingness to help others and has worked hard to earn this new Rank. Congrats and Thank You IronFly.