ROCCAT RYOS MK Pro Mechanical Gaming Keyboard with Per-Key Illumination, Brown CHERRY MX Key Switch (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty High Powered Hardware - two 32-bit ARM Cortex processors + 2 MB of flash memory Integrated Media Hub - audio in/out and two USB 2.0 ports Per Key Illumination - insane customization possibilities N-Key Rollover for advanced anti-ghosting