A:AnswerHello, the G815 was not designed to support O rings. If are looking to have quiet keys, we recommend either the Tactile or Linear switches that come with the G815. Thank you for your question, have a great day. -Ricky from Logitech
A:AnswerHello Dylan! The Professional Gamer Kyle "Bugha" Giersdorf used the Pro X Superlight Mouse, but not the G PRO TKL Wired Mechanical Keyboard with RGB Lighting no, it was a different keyboard. - Mathieu from Logitech
A:AnswerYes this keyboard will work on your cyber power pc. And this keyboard is great for gaming many features including game mode. I personally use this one and am in love. Very comfortable very clicky.
A:AnswerHi Glow, The G815 LIGHTSYNC RGB Gaming Keyboard does have an Echo Press effect that you can access via the G Hub software. There are thousands of profiles and lighting schemes that other gamers have created and shared. As far as the gradient glow effect that you mentioned, I couldn't find one on there. Hope that this helped and that all is going well. - Richard from Logitech