Cooler Master MCB-B511D-KGNN-RGA

Overview

The Cooler Master MCB-B511D-KGNN-RGA is a mid-tower PC case designed to deliver efficient airflow and customizable lighting while accommodating a wide range of hardware. It features a fine mesh front panel that directs fresh air to your components and reduces dust buildup, helping maintain cooler temperatures during intensive gaming or demanding workloads. With three pre-installed 120 mm ARGB fans and support for motherboards up to E-ATX size, this case balances performance and style in a compact footprint suitable for most desks.

Key features

• Fine mesh front panel enhances airflow and minimizes dust accumulation to keep your system clean and cool.
• Three 120 mm addressable RGB fans come pre-installed with an onboard controller, allowing easy lighting customization or synchronization with compatible motherboards.
• Spacious interior supports Mini-ITX, Micro-ATX, ATX, and E-ATX motherboards up to 12 × 10.7 inches, providing flexibility for various builds.
• Tempered glass side panel swings open to showcase your components and organized cable routing, adding a sleek visual element.
• Room for graphics cards up to 410 mm in length and CPU coolers up to 165 mm in height, accommodating high-performance hardware.
• Supports up to seven fans or two 360 mm radiators for advanced liquid cooling setups, ensuring optimal thermal management.
• Removable dust filters located at the front, top, and bottom simplify maintenance and help keep internal components free of debris.
• Front I/O panel includes two USB 3.2 Gen 1 ports plus microphone and headphone jacks for convenient connectivity.
• Bottom-mounted power supply chamber supports units up to 180 mm and aids in clean cable management for improved airflow.
• Black exterior finish blends well with gaming setups and professional environments alike, offering subtle style with customizable lighting effects.

Key specs

• Motherboard compatibility: Mini-ITX, Micro-ATX, ATX, E-ATX (up to 12 × 10.7 inches)
• Pre-installed fans: Three 120 mm ARGB
• Graphics card clearance: Up to 410 mm
• CPU cooler height clearance: Up to 165 mm
• Radiator support: Two 360 mm (front and top)
• Fan mounting positions: Seven total
• Power supply size support: Up to 180 mm (bottom chamber)
• Front I/O ports: Two USB 3.2 Gen 1, microphone jack, headphone jack
• Side panel: Tempered glass, hinged
• Dust filters: Front, top, bottom (removable)

Connectivity and compatibility

The case’s front panel offers easy access to two USB 3.2 Gen 1 ports, which provide fast data transfer speeds for external drives and peripherals. Audio jacks for microphone and headphones support clear communication and immersive sound during gaming or calls. Its compatibility with a wide range of motherboard sizes ensures you can build or upgrade your system without worrying about fit, while the ARGB lighting can sync with many popular motherboard brands for a unified look.

Cooling and airflow design

The fine mesh front panel is engineered to channel fresh air directly to your components, which is essential for maintaining stable temperatures during extended gaming sessions or heavy workloads. The three included 120 mm ARGB fans not only add visual flair but also contribute to steady airflow. With seven total fan mounting positions and support for two large 360 mm radiators, this case can handle advanced cooling configurations, whether you prefer air or liquid cooling solutions.

Build quality and cable management

The tempered glass side panel provides a clear view of your build and swings open for easy access during installation or upgrades. Multiple tie-down points and a shrouded power supply bay help keep cables neatly routed and out of airflow paths, which improves cooling efficiency and overall system tidiness. Removable dust filters at key intake points make cleaning straightforward, helping to extend the lifespan of your components.

Who this case is for

The MasterBox MB511 ARGB is a strong choice for PC builders who want a balance of airflow, lighting customization, and hardware compatibility in a mid-tower form factor. It suits gamers aiming for high frame rates with cool, quiet operation, content creators needing space for powerful GPUs and cooling, and anyone refreshing an older system with better thermal performance and style. Its black finish and tempered glass panel make it a versatile option for both gaming desks and professional setups.

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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