What are Pro Players Gaming on?

...and can you learn from this at all if you want to go pro?
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Pro Settings site - https://prosettings.net/
The summary page -   / the_most_used_settings_and_gear_in_profess...  
Key roll-over test - http://gadzikowski.com/nkeyrollover.html
https://afkgaming.com/csgo/guide/6811...

0:00 - Intro
2:04 - Mouse
5:04 - Mousepads
5:36 - Keyboard
6:44 - Headset
8:34 - Monitor
10:54 - Resolution / Aspect ratio
13:37 - Hardware