I have this keyboard for weeks now and I am really really happy with it, the red back light is drop dead gorgeous! I have it paired up with a G400 (Yup, just like in OP, but with a QcK mouse pad). I seriously cannot complain about this keyboard, it is really a nice piece of kit, I can understand why CM did not include the adapter, the reason is to keep the price low, good adapters are quite costly, and cheap adapters just spoil within weeks and can cause problems to the keyboard if there is a surge or something like that. The only thing I'm not really happy about is that CM did not provide an official adapter or something like that on their official website. I don't know why some Pele are raging at the fact that the keyboard did not come with the windows key activated, it was very easy to program the keys and learn how to program it, they are just lazy to google the solution , that's all.
Overall, I will give this keyboard a 9/10 rating, its the best keyboard at its price range and better than some keyboard at higher price ranges as well. Some say that the Trigger is a copy of the black widow, my response to it is very simple. ARE YOU KIDDING ME!? The BWU is crap! 2KRO, Glossy finish, flickering LEDs, spoils very easily, high failure rate even though they are in this "Gaming" thing for years now.