Introduction
Thank you for choosing the Cooler Master MasterBox NR400 Micro-ATX Tower. This manual provides essential information for setting up, operating, and maintaining your PC chassis. The NR400 is designed for optimal thermal performance with a minimalistic aesthetic, featuring a full mesh front panel and a tempered glass side panel.
Setup and Installation
Follow these steps for proper installation of your components into the MasterBox NR400 chassis.
1. Preparing the Chassis
- Side Panel Removal: The tempered glass side panel is fastened by thumbscrews located on the rear panel. Carefully remove these screws and detach the panel to access the interior.
- Accessory Kit: Locate the accessory bag inside the chassis, which contains all necessary screws and cable ties for your build.
2. Motherboard Installation
- Install the I/O shield into the designated slot at the rear of the chassis.
- Ensure the correct standoffs are in place for your Micro-ATX or Mini-ITX motherboard. Secure the motherboard using the provided screws.
Image: Internal view of the Cooler Master MasterBox NR400 chassis with a motherboard, CPU cooler, and graphics card installed, demonstrating component placement.
3. Power Supply Installation
- Attach the power supply bracket to your ATX power supply unit using the provided screws.
- Slide the power supply into its dedicated compartment at the bottom of the chassis and secure it with screws.
4. Drive Bay Configuration
- The chassis supports various drive configurations, including 2.5" and 3.5" drives. Utilize the tool-less system for easy mounting.
- An optional ODD (Optical Disc Drive) bay is available. If not preferred, it can be removed for a cleaner aesthetic and improved airflow.
Image: Close-up view of the ODD bay, highlighting its removable nature for enhanced cooling options.
5. Cable Management
- Utilize the high-quality rubber grommets and 22mm clearance behind the motherboard tray to route and manage cables effectively. This ensures optimal airflow and a clean interior.
Operating Instructions
The MasterBox NR400 is a passive component, and its operation is primarily controlled by the installed hardware. Key operational features are accessible via the front I/O panel.
Front I/O Panel
- Power Button: Press to power on or off your system.
- Reset Button: Press to restart your system.
- USB Ports: The front panel includes two USB 3.0 ports and two USB 2.0 ports for connecting peripherals and external devices.
- Headset Jack: A single 4-pole headset jack provides simultaneous audio and microphone capabilities, eliminating the need for separate jacks.
Image: Detailed view of the front I/O panel, showing USB ports, headset jack, and power/reset buttons.
Maintenance
Regular maintenance ensures optimal performance and longevity of your MasterBox NR400 chassis.
Dust Filter Cleaning
- The full mesh front panel and ventilated top panel are designed for high airflow, which may accumulate dust over time.
- The chassis features magnetic dust filters for easy removal and cleaning. Regularly clean these filters to maintain optimal thermal performance and prevent dust buildup inside your system.
Image: Front and side view of the chassis, showcasing the mesh panels that require periodic cleaning.
Troubleshooting
If you encounter any issues with your Cooler Master MasterBox NR400, consider the following basic troubleshooting steps:
- Power Issues: Ensure all power cables are securely connected to the power supply, motherboard, and wall outlet. Verify the power supply switch is in the 'ON' position.
- Component Detection: If a component is not detected, re-seat it firmly in its slot (e.g., RAM, graphics card). Check all data and power connections.
- Overheating: Ensure all fans are spinning correctly and dust filters are clean. Verify proper airflow within the chassis.
- Front I/O Malfunction: Check the internal connections from the front I/O panel to the motherboard. Ensure they are correctly seated.
For persistent issues, please refer to the support section or consult a qualified technician.
Specifications
| Feature | Detail |
|---|---|
| Brand | Cooler Master |
| Model Name | NR400 |
| Item Model Number | MCB-NR400-KG5N-S00 |
| Case Type | Micro-ATX Tower |
| Motherboard Compatibility | Micro ATX, Mini ITX |
| Material | Alloy Steel, Plastic, Tempered Glass |
| Product Dimensions (LxWxH) | 16.18 x 8.27 x 16.18 inches |
| Item Weight | 14.52 pounds |
| Number of USB 3.0 Ports | 2 |
| Number of USB 2.0 Ports | 2 |
| Power Supply Mounting Type | Bottom Mount |
| Cooling Method | Air |
| Fan Size | 120 Millimeters |
| Graphics Card Support | Up to 346 millimeters |
Image: Technical drawing illustrating the dimensions of the Cooler Master MasterBox NR400 chassis.
Product Videos
Cooler Master MasterBox NR400 Overview
This video provides an official overview of the Cooler Master MasterBox NR400, showcasing its features and design.
Warranty Information
For detailed warranty information regarding your Cooler Master MasterBox NR400, please refer to the official Cooler Master website or the warranty card included with your product. Warranty terms and conditions may vary by region.
Customer Support
If you require further assistance or have questions not covered in this manual, please visit the official Cooler Master support website or contact their customer service department. Contact information can typically be found on the Cooler Master website or product packaging.
