This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com Three-zone dynamic RGB backlighting with 10+ preconfigured vivid RGB lighting modes allow you to choose immersive lighting effects 6 programmable macro keys enable powerful actions, key remaps and combos Dedicated Volume and multimedia controls for direct Audio control without interrupting your game Quiet and responsive keys give a satisfying feel. Compatibility and System Requirements: Windows 10, Windows 8, Windows 7, or Windows Vista. PC with 2 USB 2.0 ports