OUTSTANDING FLEXIBILITY AND SILENCE The be quiet! Dark Base Pro 900 PC case is the perfect choice for all of those who expect the highest standards when it comes to modularity, compatibility and design. be quiet! Dark Base Pro 900 offers unrivaled flexibility with impeccable cooling and silence features. Simply an engineering work of art! HIGHLIGHTS Fully versatile thanks to modular construction, offering an relocatable motherboard tray, repositionable HDD slots, support for even E-ATX and XL-ATX as well as the possibility of an inverse layout Three pre-installed SilentWings® 3 140mm PWM fans featuring a smooth-running 6-pole motor, fluid-dynamic bearing and funnel-shaped air inlets Advanced PWM hub and manual fan controller supports up to four PWM and four 3-pin fans Effective full circuit airflow system with innovative noise-reducing vents all around the case Completely sound insulated case with decoupled elements for motherboard tray, power supply and drives Four areas for water cooling radiators up to 420mm on top, front, back and base of the case Elegant, fully windowed side panel made of tinte model : BGW10 tag : Computer Cases