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 , Well-conceived system for an extremely user-friendly handling , Flexible motherboard tray for an inverted layout , Subtle ARGB lighting in the front and the PSU Shroud .