Description
The Cooler Master N400 (NSE-400-KKN2) stands as a testament to functional design in the N-Series lineup, prioritizing thermal efficiency through its signature fully-meshed front array. Engineered for enthusiasts who demand consistent airflow, this mid-tower chassis accommodates modern high-end hardware within a midnight black, polymer and mesh frame. It bridges the gap between classic storage needs and contemporary cooling requirements, offering a versatile internal layout that supports both liquid cooling radiators and extensive hard drive arrays.
This product is for:
- High-Airflow Enthusiasts: Users seeking maximum thermal dissipation will benefit from the mesh front and support for up to 8 cooling fans.
- Legacy Hardware Users: Ideal for those requiring 5.25-inch external bays for optical drives or front-panel accessories.
- Storage-Heavy Professionals: With 7 internal 3.5-inch bays and 3 dedicated SSD mounts, it serves as an excellent base for local file servers or media workstations.
- Liquid Cooling Builders: Specifically designed to house 240mm radiators on the top or right side, providing flexible mounting for AIO or custom loops.
- Budget-Conscious Gamers: Supports full-sized GPUs up to 320mm, including flagship cards like the GTX 690 or HD 7990, without requiring a premium price tag.
Detailed specifications:
- Model Number: NSE-400-KKN2
- Dimensions: 501.4 x 190 x 426 mm (19.7 x 7.5 x 16.7 inches)
- Net Weight: 5.6 kg (12.3 lbs)
- Motherboard Compatibility: ATX, Micro-ATX
- Drive Bays: 2 x 5.25" (External), 8 x 3.5" (1 External, 7 Internal), 3 x 2.5" (Internal)
- I/O Panel: 2 x USB 3.0, 2 x USB 2.0, 1 x Mic, 1 x Audio (Intel HD Audio/AC 97)
- Expansion Slots: 7
- Maximum Clearances: GPU length 320mm; CPU cooler height 164mm
- Cooling System: Includes 2 x 120mm fans; supports up to 8 fans total
- Dust Management: 3 Removable filters (Top, Right side, PSU intake)
Building in the N400 offers a streamlined experience focused on utility and maintenance. The inclusion of two pre-installed 120mm fans ensures immediate out-of-the-box airflow, while the tool-free 2.5-inch drive cages simplify SSD installation. Maintenance is handled by three strategically placed dust filters located at the top, right side, and bottom PSU intake, which are easily accessible for cleaning. The internal layout is optimized for cable management with a fully black-coated interior that maintains a clean aesthetic behind the mesh panels.
Compared to standard closed-front mid-towers, the N400 offers significantly lower intake resistance, which directly translates to lower component temperatures under load. While many modern cases have abandoned the 5.25-inch drive bay entirely, the N400 retains this functionality without sacrificing the ability to mount a 240mm radiator—a rare combination in the mid-tower segment. Its support for 164mm tall CPU coolers also provides broader compatibility with high-performance air towers compared to slimmer entry-level cases.
Q&A:
What is the maximum graphics card length supported by the N400?
- The case supports high-end GPUs up to 320mm (12.6 inches) in length, including dual-GPU cards.
Can I install a liquid cooling system in this case?
- Yes, the N400 supports 240mm radiators on the top or the right side, and a 120mm radiator in the rear.
How many SSDs can I install?
- The chassis features three dedicated 2.5-inch drive spots: two in a tool-free cage and one mounted at the bottom.
Does the case include dust filters?
- Yes, it includes three removable dust filters located at the top, the right side panel, and under the power supply unit for easy maintenance.
What is the maximum height for a CPU air cooler?
- The N400 accommodates CPU heat sinks up to 164mm in height, fitting most standard performance air coolers.
