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An ITX case that features compatibility with high-end, full-size components, superior sound dampening, and an ATX-like layout
Define Series hallmarks in the ITX form factor: sound dampening plus ModuVent™ technology
User-friendly design with an ATX style layout and full-size component compatibility
Good storage options for its size: up to 4 drives can be installed
Multiple cooling setups: room for tower air coolers; includes brackets for pump and reservoir mounting
Open interior allows air to pass through unobstructed from the front intake to the back exhaust
Designed for silent computing
This case includes two Dynamic Series fans with both bottom and front intakes protected by easy-to-clean, removable dust filters. With its mounting capabilities for simultaneous radiators and unobstructed airflow path, the Define Nano S can cool enthusiast-level components.
Equipped with Fractal Design’s signature ModuVent™ technology on the top vents and sound dampening throughout, the Define Nano S can run a powerful system quietly, a hallmark of the Define series.
User-friendly construction compatible with full-size components and with superior cable management
Flexible storage options with room for up to four drives
Accommodates a variety of radiator sizes and includes brackets for reservoir and pump mounting
Features two Dynamic Series fans — 1 GP-12 and 1 GP-14 — with an adapter included for motherboards with limited fan headers
Featuring an open interior allowing an unobstructed airflow path from the front of the case to the rear exhaust
Easy-to-clean filters on the bottom and front, spanning the PSU position, with the bottom filter ejecting from the front for easy-access
Power Supply Wattage
Connectors / Controls
2 x USB 3.0
Power button with LED (blue)
HDD activity LED (blue)
2 x 3.5" HDD/2.5" SSD positions
2 x 2.5" dedicated SSD unit positions (up to 13 mm thick)
2 Expansion slots
Front: 1 x Dynamic GP14 140 mm fan
Rear: 1 x Dynamic GP12 120 mm fan
Front: 2 x 120 / 140 mm
Top: 2 x 120 / 140 mm
Rear: 1 x 120 mm
Bottom: 1 x 120 mm
Water Cooling options:
Front: 120/240 mm or 140/280 mm (max width 147 mm, max length 312 mm; some radiators extend beyond the screw holes)
Top: 120/240 mm (max component height on motherboard 35 mm. Big heat sinks on RAM or power regulators around CPU could conflict with this restriction.)
Rear: 120 mm (max width 125 mm; some radiators extend beyond the screw holes)
Bottom: 120 mm (max thickness and length: 85 mm x 160 mm)
Left side panel: Clear transparent window
Right side panel: Industrial sound-dampened steel
315 mm with front fans mounted (cards wider than the dual slot bracket are not recommended)
Max recommended GPU thickness: 39 mm
Max CPU Cooler:
Max length: 160 mm
(WxHxD) 203 x 330 x 400 mm
With feet/protrusions/screws: 203 x 344 x 412 mm
Volume: 26.8 liters
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