# Cooler Master MasterBox NR400 Micro-ATX Tower with Front Mesh Ventilation, Minimal Design, Tempered Glass Side Panel and Single Headset Jack

- Category: Case
- Brand: Cooler Master
- Model: MasterBox NR400
- Part number: MCB-NR400-KG5N-S00
- Price (US): $69.99
- Price last checked: 2026-08-06
- Rating: 4.7/5 from 1098 Amazon reviews
- Warranty: 2 years
- Product page: https://buildmypc.net/component-details/case/cooler-master-masterbox-nr400-mcb-nr400-kg5n-s00/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Cooler Master |
| Model | MasterBox NR400 |
| Cabinet Type | MicroATX Mid Tower |
| Side Panel | Tempered Glass |
| Color | Black |
| Power Supply | N/A |
| Maximum 3.5 Drive Space | N/A |
| Maximum 2.5 Drive Space | N/A |
| GPU Length | 346 mm / 13.622" |
| Supported PSU Size | ATX |

## Key Features

- Minimalistic mesh design: Elegant design elements are applied to mesh for optimal thermal performance
- Optimal thermal performance, the full mesh front panel and ventilated top panel provide a high potential for thermal performance
- Flush Tempered glass Side panel design:The tempered glass Side panel, fastened by thumbscrews on the rear panel, keeps the surface flush and unobstructed
- Graphics Card support up to 346 millimeter: Generous clearance space is provided to support the latest graphics cards
- With/without ODD support, depending on preference, an odd version of the chassis is available; If an odd is not preferred, a cleaner appearance and more cooling options on the top and front panels are supported
- Headset jack the single 4 pole headset jack features both Audio and microphone capabilities simultaneously so that separate jacks are not needed
- Cable management high quality rubber grommets are paired with 22 millimeter of clearance behind the motherboard TO offer ample room for cable management
- Internal dimension - 9.6” X 9.6”

---

Source: BuildMyPC (https://buildmypc.net/) — free PC parts compatibility checker. Prices update daily. As an Amazon Associate, BuildMyPC earns from qualifying purchases.