Cooler Master MFL-B4DN-16NP2-R2

Overview

The Cooler Master MFL-B4DN-16NP2-R2 is a 140 mm case fan designed to enhance cooling performance while adding customizable addressable RGB lighting to your PC build. It delivers up to 59.51 CFM airflow at 1600 RPM, balancing effective heat dissipation with quiet operation at a maximum noise level of 27 dBA. This fan fits well in gaming rigs, creative workstations, and home-office PCs, providing both functional airflow and vibrant lighting effects that sync with popular motherboard software.

Key features

• Dual loop ARGB lighting around the hub and rim creates an even, bright glow that can be customized to match your system’s theme or highlight key components.
• Enlarged Air Balance blades improve airflow efficiency, helping to lower system temperatures during demanding tasks.
• Hybrid frame design adds structural rigidity and directs airflow precisely to critical areas inside the case while reducing vibration.
• PWM control allows dynamic fan speed adjustment from silent zero-RPM idle to full 1600 RPM, optimizing noise and cooling based on system load.
• Quiet operation at up to 27 dBA ensures minimal disruption during gaming, video calls, or work sessions.
• Durable rifle bearing rated for over 160,000 hours supports long-term reliability and consistent performance.
• Standard 4-pin PWM and 3-pin ARGB connectors make installation straightforward in most modern cases and fan hubs.

Key specs

• Fan size: 140 mm
• Maximum airflow: 59.51 CFM
• Maximum speed: 1600 RPM
• Noise level: up to 27 dBA
• Lighting: addressable RGB with dual loop LEDs
• Bearing type: rifle bearing
• Rated bearing life: over 160,000 hours
• Connectors: 4-pin PWM, 3-pin ARGB

Connectivity and compatibility

This fan uses standard 4-pin PWM connectors for speed control and 3-pin ARGB connectors for lighting, ensuring compatibility with a wide range of modern motherboards and fan controllers. The addressable RGB lighting can be synchronized with popular motherboard software, allowing seamless integration into your existing lighting setup.

Performance and reliability

The enlarged Air Balance blades and hybrid frame work together to deliver strong, directed airflow that efficiently cools critical components. The rifle bearing inside the hub is engineered for durability, providing more than 160,000 hours of operation, which means you can rely on this fan for years without performance degradation. Its quiet operation even at full speed helps maintain a comfortable environment whether you are gaming or working.

Ideal uses and environments

This case fan suits users who want to improve cooling in mid to high-performance PCs while adding customizable lighting effects. It fits well in gaming systems that require efficient heat management, creative workstations handling intensive tasks, and quiet home-office setups where noise reduction is important. The flexible PWM control makes it adaptable to varying workloads and ambient temperatures.

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.

Learn more

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.

Learn more