Is there a way to make the Function keys act as standard keys with a Logitech K811 keyboard? I changed the Fn key on my Macbook Pro to actually work in the reverse way (so, just hitting the F1 key actually sends the "Function 1" signal, rather than the brightness decrease signal when the Fn key is not pressed, and the brightness decrease signal if the Fn key is pressed). I did this because, as a developer, it's much more useful to me to be able to utilize the function keys than the other (what I consider auxiliary) functions.

However, when I'm at home, I use an external keyboard (a Logitech K811). It's a great keyboard, but it doesn't seem to sense the preference change I made with the Fn key. That is, on my macbook keyboard, I don't have to hold Fn to activate the function keys, but on my Logitech keyboard, I do.

Is there a way to make the Logitech keyboard also act the way I have it setup in my System Preferences?
According to Logitech you need they Preferences Manger download and installed.

Make sure you pick the right OS X and follow the instructions.