Interchangeable top cover and front panel for either maximum airflow or virtually inaudible operation Fan and radiator brackets with integrated fan hub in front and top make installation a breeze 3 Silent Wings 4 PWM fans for a virtually inaudible operation and high performance Touch-sensitive I/O panel for state-of-the-art operation Generous dimensions ensure operation of E-ATX motherboards and radiators up to 420mm Advanced VGA holder prevents sag of even the largest graphics cards Well-conceived system for an extremely user-friendly handling Versatile motherboard tray for an inverted layout option Flexible cable bars make for a neat interior Power supply can be easily installed from the back of the case Subtle ARGB lighting in the front and the PSU Shroud Tempered glass side window allowing a superb view of the PC components OUTSTANDING VERSATILITY, PERFORMANCE AND SILENCEDark Base Pro 901 is the epitome of a flexible, yet user-friendly case. Design Maximum graphics card length 49.5