The Fractal Design Define S borrowed the appearance, sound dampening technology, and support for a wide variety of components from the widely popular Define Series, while introducing a new, innovative internal layout
 

• Optimally designed for silent computing, while not compromising on airflow and cooling capabilities
• Innovative internal layout, providing a perfectly straight airflow path to the CPU heatsink for air cooling set ups or extensive radiator mounting possibilities for water cooling set ups
• Extensive water cooling support for a case of this size; housing radiators up to 420mm in the top and 360mm in the front
• Including smart reservoir brackets; featuring drill-free reservoir mounting on the front of the motherboard tray and predrilled pump mounting holes on the bottom panel
• Equipped with ModuVent™ fan slot covers providing the option of additional cooling or maximum sound absorption
• Including two Fractal Design Dynamic GP14 140mm fans developed for superlative airflow while still maintaining low noise levels
• Maintaining a dust-free interior with dust filters that cover the front and bottom air intakes
• Introducing newly designed hard drive trays placed vertically behind the front partition of the motherboard tray; Three sturdy steel trays with vibration-dampening grommets allowing for installation of one 3.5” or 2.5” drive on each tray, without disrupting the airflow or interfering with the radiator mounting possibilities
• An additional 2 dedicated steel SSD trays cleanly placed behind the motherboard tray
• Long motherboard tray extending to the front panel contributing to an extremely clean build, hiding both hard drives and cables