The Be Quiet! Dark Base Pro 900 case is the perfect choice for all of those who expect the highest standards when it comes to modularity, compatibility and design. Featuring a fully versatile modular construction, three Be Quiet! SilentWings 3 PWM fans, extensive water cooling support, an intelligent full circuit airflow system and a wide range of features and high-quality materials the Dark Base Pro 900 offers unrivaled flexibility with impeccable cooling and silence features. Simply an engineering work of art. Backed by a 3 year Be Quiet! warranty.