I dunno. It works OK for me (and I use a cheap off-brand USB cable that works fine for me). I keep it plugged in, so I don't really care about wireless or Bluetooth.
Like I said, I am not really fanatical about keyboards. I wanted the RGB backlights, relatively tactile (but not super -I use red keys), and fairly small. I also wanted wired. This is wireless, but runs as wired.
It seems to be a common frame. I think I have seen almost identical port layouts in other brands.
I have the K2 LED/aluminum, hot swappable model with the medium click keys. It's 2ish years old I think. I mostly use it plugged in so I don't have to think about charging. I use it every day and it's worked great. It was my first and only mechanical keyboard, and I love typing on it. It makes me want to type.
