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CM N400 ATX MID TOWER W/USB 3.0 (023293)

Product Number:
Cooler Master

The new Cooler Master N400 is a mid-tower designed for optimum cooling and expandability. The front panel and I/O area feature the premium mesh for a modern look. There are four models to choose from by fans (with / without white LED) and side panel window. It supports up to 8 fans, including two pre-installed fans for extreme high airflow. If you prefer liquid cooling solutions, installing 240mm or 120mm radiators in N400 won't be a problem as well - the 240mm radiator can be installed at the top or on the right side, and the 120mm one - in the rear. N400 also provides plenty of expansion by support of up to 3 SSDs and high-end graphics cards up to 320mm / 12.6 inch.

Model Number





190 x 426 x 501 mm / 7.5 x 16.7 x 19.7 inch

Motherboard Form Factor



Appearance: Polymer & Steel mesh front panel; Body: Steel alloy

5.25” Device Bays


3.5” Device Bays

1 Exposed, 7 Hidden

2.5” Device Bays


Front I/O Panel

USB 3.0 x 2, USB 2.0 x 2, Audio In & Out

Rear Expansion Slots


Fan Cooling Mounts

Top: 120mm fan x 2; Front: 120mm fan x 2; Left Side: 120/140mm fan x 1; Right Side: 120mm fan x 2

Radiator Support

Front: 240mm; Rear: 120mm

Included Cooling Devices

Front: 120mm Black fan x 1; Rear:120mm Black fan x 1

Power Supply

Bottom mount ATX PS2 180mm / 7.1 inch

Max CPU Cooler Height

164mm / 6.4 inch

Max GPU/PCI Card Length

320mm / 12.6 inch

Special Features

Side 240mm Radiator Support


5.6 kg / 12.3 lbs