Cooler Master MCB-NR400-KG5N-S00

Overview

The Cooler Master MCB-NR400-KG5N-S00 is a mini-tower PC case designed to provide a practical and stylish solution for building compact yet powerful systems. It supports Micro-ATX and Mini-ITX motherboards and accommodates graphics cards up to 346mm in length, making it suitable for a wide range of modern components. With a fine mesh front panel and two preinstalled 120mm fans, it ensures effective airflow to keep your system cool during intensive use.

Key features

• Fine mesh front panel that enhances airflow while filtering out dust to maintain system cleanliness and cooling efficiency
• Tempered glass side panel offering a clear view of internal components, perfect for showcasing your build
• Support for both Micro-ATX and Mini-ITX motherboards, providing flexibility in component selection
• Capacity to fit graphics cards up to 346mm long, covering most current GPU models
• Multiple storage options with four 2.5-inch and four 3.5-inch drive bays to accommodate SSDs and HDDs
• Two preinstalled 120mm fans to ensure optimal cooling right out of the box, with additional mounting points for further customization
• Front I/O panel featuring two USB 3.0 ports and a 4-pole headset jack for convenient connection of peripherals and audio devices
• Compact mini-tower design that fits well in smaller spaces while offering efficient cable management to keep your build tidy

Key specs

• Motherboard support: Micro-ATX, Mini-ITX
• Maximum GPU length: 346 mm
• Drive bays: Four 2.5-inch, four 3.5-inch
• Preinstalled fans: Two 120mm
• Front I/O ports: Two USB 3.0, one 4-pole headset jack
• Case type: Mini-tower

Connectivity and compatibility

The front panel provides easy access to two USB 3.0 ports, allowing fast data transfer and connection of external drives or peripherals. The 4-pole headset jack supports combined audio and microphone connections, ideal for gaming or video calls. Compatibility with Micro-ATX and Mini-ITX motherboards ensures this case works well with a broad range of PC builds, from compact home office setups to gaming rigs.

Cooling and airflow design

The fine mesh front panel is designed to maximize airflow while preventing dust from entering the case, which helps maintain component longevity and performance. Two 120mm fans come preinstalled to provide immediate cooling, and additional mounting points allow you to add more fans or radiators if you want to enhance thermal management further. This makes the case adaptable to different cooling needs, whether air or liquid cooling.

Ideal uses and environments

This mini-tower case fits well in environments where space is limited but performance and expandability remain important. It suits home offices, gaming setups, and workstations that require efficient cooling and neat cable management. Its tempered glass panel also appeals to users who want to display their components with a clean and modern aesthetic.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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