Fractal Design Define One Dark Solid Midi-Tower Case, Black

The Fractal Design Define One Dark Solid is a black ATX mid-tower case built around a closed, sound-dampened layout for gaming and workstation systems. Its solid panels and refined side air intakes are intended to limit operating noise while preserving airflow. Motherboard support spans Mini-ITX, Micro-ATX, ATX and E-ATX. Reverse Micro-ATX and Reverse ATX layouts are also supported, broadening compatibility with rear-connector builds. Graphics cards can be up to 368 mm long, and seven standard expansion slots provide room for a dedicated GPU and additional PCIe cards.

The steel chassis has no side window or built-in lighting, giving it a restrained, fully enclosed appearance. Three Momentum 14 fans are installed at the front and use 4-pin PWM connectors. Builders can fit up to three front fans, two top fans and one rear fan. Liquid-cooling support extends to a 360 mm front radiator, a 280 mm top radiator and a 120 mm rear radiator. Dust filtration helps with maintenance, while integrated cable management and the supplied PWM extension cable support a tidier build. An ATX power supply mounts at the bottom, with up to 180 mm of clearance.

• 171 mm maximum CPU cooler height
• Two USB 3.2 Gen 1 Type-A ports on the front panel
• One USB 3.2 Gen 2x2 Type-C port
• Two 3.5" bays and four 2.5" bays for HDD and SSD storage
• Combined headphone and microphone jack on the front I/O
• 500 × 235 × 482 mm, weighing 11.2 kg
• Power supply not included