Cougar 550M optische Gaming Maus

I bought it to replace my Logitech MX518, which was long overdue. I couldn't be happier about my choice. Edit: I tried to use this mouse and a WASD Code keyboard with an IOGEAR GUS434 4x4 USB 3.0 Sharing Switch. This way I could use it it on all three machines I use (2 iMacs, and custom Windows machine). When this mouse is plugged into either of the iMacs it prevents certain keys from being entered during login at startup. I have heavily tested and cross tested my configuration and isolated it to this mouse specifically. I can plug it in AFTER log in and it works fine. Perhaps there is some sort of compatibility issue. Not sure what can be done to fix it. The system requirements only lists Win 7, 8, 10 so technically it's outside of spec to be used in OS X.

I have had a few gaming mice so far, and nothing has felt quite as good as this one. The contours just fit my hand so nicely, its almost like a glove. I have only been using this for a couple days, so time will tell to see how it lasts.

I just got it today, so not much I really can say other then it works great, I am very happy with it, I bought the 3 year warranty, so im good if it breaks.

Love this mouse! Fits great in my big dumb hands. Great buy, I'm so glad I have this mouse now. Works well in any type of game, moba, shooters, ect. Glides nicely, precise and the dpi trigger is great for setting up how fast you want your cursor to move across screen. The lighting on it is great, customizable to fit whatever you fancy.

The mouse is great, I just dislike the extrusion on the right button, feels awkward