Forgot to mention, there is no function key. It's replaced by a windows key, and it acts like a windows key as well. I saw in a review video someone was able to do it by holding control. What I'm confused about is, they gave me the LEDs underneath all the keys and DON'T let me use them. If I knew enough about keyboards and all sorts of circuitry and soldering, I could get them to work. Doesn't make sense that they dished out the product and I can't use part of it. It's their loss almost.