Cooler Master N400 Computer Case

Important Warnings

CPU Cooler Installation: Ensure your CPU cooler does not exceed 6.4 inches (164mm) in height. Exceeding this limit may cause damage to the side panel of the case and the CPU cooler.

Graphics Card Installation: Ensure your graphics card does not exceed 12.6 inches (320mm) in length. Exceeding this limit may cause damage to the case and the graphics card.

Installation Guide

Diagrams

Left Side View Diagram: Illustrates the left side of the computer case.

Component Views: Diagrams showing the Power Supply (PSU), Rear, and Right side of the case.

Component Installation Procedures

Radiator Installation

Note: Before installing a radiator, please remove the 2.5" cage.

(Multilingual support for radiator installation instructions available in Arabic, Bulgarian, Italian, Japanese, Korean, Kazakh, Simplified Chinese, Traditional Chinese, Czech, Dutch, German, Portuguese, Greek, Russian, Spanish, Serbian, French, Turkish, Hungarian, Ukrainian.)

Power Supply Installation

(Multilingual support for power supply installation instructions available in Arabic, Bulgarian, Italian, Japanese, Korean, Simplified Chinese, Traditional Chinese, Czech, Dutch, German, Portuguese, Spanish, Serbian, Greek, Russian, French, Turkish, Hungarian, Ukrainian.)

Add-on Cards Installation

(Multilingual support for add-on cards installation instructions available in Arabic, Korean, Kazakh, Simplified Chinese, Traditional Chinese, Czech, Dutch, German, Portuguese, Greek, Russian, Spanish, French, Hungarian, Turkish, Ukrainian.)

Motherboard Installation

(Multilingual support for motherboard installation instructions available in Arabic, Bulgarian, Simplified Chinese, Traditional Chinese, Czech, German, Greek, Spanish, French, Hungarian, Italian, Japanese, Korean, Kazakh, Dutch, Polish, Portuguese, Russian, Serbian, Turkish, Ukrainian.)

5.25" and 3.5" Devices Installation

5.25" Device Installation: Secure the device into the external bay using the 5.25" tool-free mechanism.

3.5" Device Installation: Secure the device using the 3.5" tool-free mechanism.

3.5" and 2.5" Devices Installation: Instructions for installing 3.5" and 2.5" drives.

2.5" HDD/SSD Installation: Instructions for installing 2.5" Hard Disk Drives or Solid State Drives.

Removing 2.5" HDD/SSD: Procedure for removing a 2.5" HDD/SSD from its cage.

(Multilingual support for 5.25" and 3.5" devices installation instructions available in Arabic, Bulgarian, Simplified Chinese, Traditional Chinese, Czech, German, Greek, Spanish, Italian, Japanese, Korean, Kazakh, Dutch, Polish, Portuguese, Russian, Serbian, French, Turkish, Hungarian, Ukrainian.)

Case Fan Installation and Replacement

Front Fan Installation: Install up to two 120mm fans.

Rear Fan Installation: Install one 120mm fan.

Top Fan Installation: Install up to two 120mm fans.

Left Side Fan Installation: Install one 120mm or 140mm fan.

Right Side Fan Installation: Install up to two 120mm fans. Note: Remove the 2.5" cage before installing the right side fan.

(Multilingual support for case fan installation and replacement instructions available in Arabic, Bulgarian, Korean, Simplified Chinese, Traditional Chinese, Czech, German, Greek, Spanish, French, Hungarian, Dutch, Polish, Portuguese, Russian, Serbian, Turkish, Ukrainian.)

Fan LED On/Off Functionality

Control the white LED on the front fan using the dedicated switch.

(Multilingual support for fan LED on/off functionality available in Italian, Arabic, Japanese, Bulgarian, Simplified Chinese, Traditional Chinese, Czech, Hungarian, Korean, Kazakh, Dutch, Polish, Portuguese, Russian, Serbian, Turkish, Ukrainian.)

I/O Function Panel Installation

Connector Matching: Refer to your motherboard's user manual for USB 3.0, USB 2.0, and audio connector compatibility. Ensure the motherboard connectors match the included front panel cables to prevent damage and loss of function.

I/O Connector Diagram: The following details the I/O connectors and their pin assignments:

• USB 3.0 Connector:
  • Pin 1: Vbus
  • Pin 2: SSTX+
  • Pin 3: SSTX-
  • Pin 4: GND
  • Pin 5: SSRX+
  • Pin 6: SSRX-
  • Pin 7: GND
  • Pin 8: D+
  • Pin 9: D-
  • Pin 10: GND
• USB 2.0 Connector:
  • Pin 1: USB+5V
  • Pin 2: USB+5V
  • Pin 3: D-
  • Pin 4: GND
  • Pin 5: D+
  • Pin 6: No Pin
  • Pin 7: No Pin
  • Pin 8: No Pin
  • Pin 9: No Pin
  • Pin 10: GND
• HD Audio Connector (Azalia):
  • PORT1L: Left audio output
  • PORT1R: Right audio output
  • PORT2R: Right audio return
  • PORT2L: Left audio return
  • GND: Ground
  • AUD GND: Audio Ground
  • SENSE_SEND: Microphone sense
  • SENSE1 RETURN: Microphone return
  • SENSE2_RETURN: Line return
  • PRESENCE#: Jack detection
  • No Pin: Not connected

(Multilingual support for I/O panel installation guide available in Arabic, Bulgarian, Simplified Chinese, Traditional Chinese, Czech, German, Greek, Spanish, French, Hungarian, Italian, Japanese, Korean, Kazakh, Dutch, Polish, Portuguese, Russian, Serbian, Turkish, Ukrainian.)

Completing Installation

Follow the final steps to complete the installation of your computer case components.

(Multilingual support for completing installation available in Italian, Arabic, Japanese, Bulgarian, Korean, Simplified Chinese, Kazakh, Traditional Chinese, Dutch, Czech, Polish, German, Portuguese, Greek, Russian, Spanish, Serbian, French, Turkish, Hungarian, Ukrainian.)