what is rgb on a keyboard?
Corsair Vengeance K70 Cherry MX RGB Red Switch Mechanical Gaming Keyboard. The Vengeance K70 RGB mechanical gaming keyboard begins with the performance of the legendary Vengeance K70, and adds multicolor per-key backlighting for virtually unlimited customization. Every key is backed with a cherry MX RGB key switch for precise actuation and superior feel, and full key rollover and anti-ghosting ensure accurate gameplay.