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.
Acer is proud to announce the promotion of Philetus to the ACE team. Philetus has been a member since March 2013 and has shown the skills and patience required to be a member of this exclusive, invite only team of experts. Congratulations Philetus!