Fractal Design Define S2 Black Brushed Aluminum Steel ATX Silent Modular Light Tint Tempered Glass Window Mid Tower Computer Case

The Define S2 is the latest leap forward in open-layout case design—an ingenious refinement of the zero-obstruction formula that cemented the series as the de facto standard for the silent high-performance build. The S2 achieves increased cooling capacity with 9 fan mounts and support for pumps, reservoirs, and large multi-fan radiators in the top, front, and base. An innovative removable bracket with built-in fill port offers easy access directly through the top of the case, and Third generation ModuVent? technology with industrial sound dampening maintains quiet operation. Full USB 3.1 Gen 2 Type-C comes standard along with three Dynamic X2 fans, full-length PSU shroud and support for vertical GPU installation via the Flex VRC-25 riser, available separately. Whether your aim is silence, efficiency or sheer water-cooled extravagance, the Define S2 hits the mark.

• Seamless tempered glass side panel and anodized aluminum front cover
• Optimized for silence with high-density industrial dampening
• USB Type-C with fast charging and speeds up to 10Gbps
• Third generation ModuVent technology
• Built-in pump/reservoir mounts and dedicated fill port
• Supports radiators up to 420mm (top), 360mm (front), and 280mm (base)
• Full length ventilated PSU shroud with alternate SSD positions
• 5 concealed drive mounts leave ample space for advanced water cooling
• Support for Flex VRC-25 Vertical GPU Riser (sold separately)
• Three silent high-airflow Dynamic X2 fans and nine total fan positions

Brand：Fractal Design
Series：Define S2
Model：FD-CA-DEF-S2-BK-TGL
Type：ATX Mid Tower
Color：Black
Case Material：Steel / Tempered Glass
With Power Supply：No
Power Supply Mounted：Bottom
Motherboard Compatibility：Micro ATX / ATX / Mini ITX / E-ATX
Side Panel Window：Yes
Removable Filter：Front (included)
Top (included)
Bottom/PSU (included)
Internal 3.5" Drive Bays：3 x 3.5"/2.5" universal mounts
Internal 2.5" Drive Bays：2 x 2.5" dedicated SSD mounts
Expansion Slots：7 + 2 Vertical
Front Ports：USB 3.1 Gen 2 Type-C / 2 x USB 3.0 / 2 x USB 2.0 / Audio
Fan Options：Front: 3 x 120mm / 140mm fan (2 x Fractal Design Dynamic X2 GP-14 140mm pre-installed)

Top: 3 x 120mm / 140mm fan

Bottom: 2 x 120mm / 140mm fan

Rear: 1 x 120mm / 140mm fan (1 x Fractal Design Dynamic X2 GP-14 140mm pre-installed)
Radiator Options：Front: 360/280/240/140/120 mm radiators

Top: 420/360/280/240/140/120 mm radiators (max 35mm motherboard component height)

Bottom: 280/240/140/120 mm radiators

Rear: 120 mm radiators
Max GPU Length Allowance：440 mm
Max CPU Cooler Height Allowance：185 mm
Dimensions (H x W x D)：18.31" x 9.17" x 21.38" with feet/screws/protrusions
17.64" x 9.17" x 21.06" without feet/filters
Weight：25.50 lbs.
Features：Modular high-airflow open layout design
Seamless tempered glass side panel with bolt-free, hinge-free surface
Elegant anodized aluminum front panel with sound absorbent inlay
Optimized for silence with high-density industrial dampening on side, top and front panels
USB 3.1 Gen 2 Typ with fast charging and speeds up to 10Gbps
Removable top bracket simplifies radiator installation
420mm top, 360mm front, and 280mm bottom radiator support
Nine fan positions with clear airflow paths
Full-length ventilated PSU shroud with removable cover and alternate SSD mounts
Third generation ModuVent technology offers a choice of soundproof steel or filtered multi-fan ventilation in the top panel
Concealed drive mounts for three 3.5" HDDs and two 2.5" SSDs
Vertical 2.5 slot GPU support via the Flex VRC-25 Vertical PCIE Riser (sold separately)
Three silent, airflow-optimized Dynamic X2 140 mm fans pre-installed
E-ATX support for boards up to 285 mm wide
Adjustable reservoir brackets
Pre-drilled pump mounts
Dedicated fill port location
Nexus+ Smart Hub controls up to three PWM devices and six case fans
Easy-to-clean front, top, and base filters with full PSU coverage and convenient front access
Push-to-lock latching for quick side panel access on both sides
Black loom-sleeved front panel wiring
Tool-less push-to-lock latching mechanism for quick access during regular use
Optional side-panel thumbscrews provide extra security during transport
Nylon mesh intakes deliver up to 2X airflow vs. conventional plastic filters
Sturdy steel HDD enclosures with vibration-dampening rubber grommets
Velcro straps and 19 tie-down locations for precision cable management
23 mm cable routing space with grommetted pass-through holes
Support for enterprise 2.5" drives up to 18mm in height
Blue LED power and disk activity indicator
Includes 3-way SATA power splitter/extension cable for simplified drive connection
Max Recommended PSU Length: 300 mm in default configuration