Types of USB Fans 2020 with LED Lights
A USB fan with LED lights is a compact, energy-efficient cooling device powered via USB connection, making it ideal for use with laptops, power banks, or wall adapters. These fans have become increasingly popular due to their portability, low power consumption, and added visual appeal from integrated LED lighting. Whether for personal comfort, ambient lighting, or outdoor use, these fans blend functionality with modern design.
Clip-On USB Fans
Designed to attach securely to desks, bed frames, shelves, or even strollers, clip-on fans deliver targeted airflow exactly where needed.
Advantages
- Space-saving and highly portable
- Adjustable clip for versatile mounting
- Often includes multi-color LED lighting
- Ideal for tight spaces like dorm rooms or offices
Limitations
- Limited airflow range
- May require stable surface for optimal performance
- Smaller blades reduce cooling power
Best for: Students, office workers, travelers, and anyone needing personal cooling on the go
Desk USB Fans
Compact and stable, desk USB fans sit directly on flat surfaces and offer adjustable tilt and oscillation for customizable airflow.
Advantages
- Stable base prevents tipping
- Multiple speed settings for comfort control
- Integrated LED lights for night use or ambiance
- Ergonomic design with quiet operation
Limitations
- Takes up desk space
- Limited mobility without external power
- LEDs may not be dimmable in budget models
Best for: Home offices, study tables, and workstations where consistent airflow and ambient lighting are desired
Portable Handheld USB Fans
Lightweight and rechargeable, handheld fans are designed for mobility and convenience, often featuring built-in batteries and collapsible designs.
Advantages
- Fully portable and easy to carry
- Rechargeable battery for cord-free use
- Many include colorful LED modes or mood lighting
- Perfect for outdoor events, hiking, or commuting
Limitations
- Battery life varies (typically 2–6 hours)
- Less powerful than stationary models
- Smaller cooling area
Best for: Outdoor activities, festivals, travel, and emergency cooling during power outages
Box USB Fans
Compact square or rectangular fans that sit on flat surfaces, offering efficient airflow in a minimal footprint.
Advantages
- Sturdy and space-efficient design
- Safety grills protect fingers and pets
- Often feature multi-color LED effects
- Easy to store and transport
Limitations
- Limited height and angle adjustment
- Less airflow than larger models
- May lack oscillation feature
Best for: Small rooms, nightstands, and areas where compact, decorative cooling is needed
Floor USB Fans
Larger, stand-mounted fans that provide broader airflow coverage, often used in living spaces or larger rooms.
Advantages
- Greater airflow and reach than desktop models
- Tall design circulates air at body level
- Bright, energy-efficient LEDs for ambient lighting
- Some models include remote control and timers
Limitations
- Requires more floor space
- Higher power consumption
- Less portable due to size and weight
Best for: Living rooms, bedrooms, and larger indoor areas needing both cooling and mood lighting
USB Rechargeable Fans with LED Displays
Advanced models combining powerful fans with digital LED screens showing battery level, speed settings, and time.
Advantages
- Digital interface for precise control
- Long-lasting rechargeable batteries
- LED display enhances modern aesthetic
- Multifunctional: cooling, lighting, and information display
Limitations
- Higher price point
- More complex controls may require learning
- Battery degrades over time with frequent charging
Best for: Tech-savvy users, travelers, and those who value smart features and modern design
| Type | Portability | LED Features | Cooling Power | Best Use Case |
|---|---|---|---|---|
| Clip-On USB Fan | High | Multi-color, decorative | Low to Medium | Desks, beds, travel |
| Desk USB Fan | Medium | Adjustable brightness, ambient | Medium | Home office, study |
| Handheld USB Fan | Very High | Mood lighting, RGB options | Low | Outdoor events, commuting |
| Box USB Fan | Medium | Decorative, multi-color | Medium | Small rooms, nightstands |
| Floor USB Fan | Low | Bright ambient lighting | High | Living rooms, large spaces |
| Rechargeable with LED Display | High | Digital screen, indicators | Medium to High | Travel, smart homes |
Expert Tip: When using USB fans with LED lights, connect them to a high-output USB port (e.g., USB 3.0 or QC charger) for optimal performance. This ensures consistent fan speed and vibrant LED illumination without power fluctuations.
Materials Used to Make USB Fan 2020 with LED Lights
A modern USB fan with LED lighting is a compact, energy-efficient device designed for personal cooling and ambient illumination. Its construction involves a combination of functional and aesthetic materials, each contributing to performance, durability, and user experience. Understanding these materials helps in selecting high-quality models and appreciating the engineering behind this everyday gadget.
Core Materials and Their Functions
Plastics
The primary structural component of most USB fans is high-impact plastic, typically ABS (Acrylonitrile Butadiene Styrene) or polycarbonate. These thermoplastics are favored for their excellent strength-to-weight ratio, making the fan lightweight yet durable enough to withstand minor drops and daily use.
Beyond structural benefits, plastic allows for intricate molding, enabling manufacturers to create sleek, ergonomic designs with enhanced airflow channels. Its smooth surface also resists dust accumulation and simplifies cleaning. Additionally, transparent or semi-transparent plastics are often used in LED-integrated models to diffuse light evenly, adding to the visual appeal.
Metal Components
While the body is usually plastic, certain high-performance USB fans incorporate metal—typically aluminum or stainless steel—in critical areas. Metal blades offer superior aerodynamic efficiency, generating stronger airflow with less wobble compared to plastic alternatives. This results in better cooling performance, especially in compact designs.
Metal is also used in fan bases or support arms to add weight and stability, reducing vibrations and preventing the unit from tipping during operation. In premium models, brushed aluminum exteriors not only improve heat dissipation but also give the fan a modern, premium look and feel.
Silicone
Silicone blades are increasingly common in quiet-operation USB fans, particularly those marketed for office or bedside use. Due to its flexible and soft nature, silicone produces minimal noise when rotating, making it ideal for noise-sensitive environments.
Moreover, silicone absorbs operational vibrations, reducing overall sound output and enhancing user comfort. Its durability and resistance to UV degradation also ensure long-term performance, even under continuous use. Some models feature full silicone shrouds for added safety and quietness.
LED Components
Integrated LED lighting has become a standard feature in many 2020-era USB fans, combining functionality with style. These lights consist of small, surface-mounted LEDs connected via printed circuit boards (PCBs), resistors, and control chips that manage color modes, brightness, and effects (e.g., breathing, strobe, or color cycling).
LEDs are highly energy-efficient, drawing minimal power from the USB source while offering vibrant illumination. RGB LEDs allow for customizable lighting, enhancing ambiance in workspaces, bedrooms, or gaming setups. The integration of diffusers—often made from translucent plastic—ensures even light distribution without hotspots.
Copper Wires
Inside the motor and internal circuitry, copper wiring plays a vital role in ensuring efficient electrical conductivity. Copper is chosen for its low resistance, which minimizes energy loss and heat generation—critical in small, enclosed devices powered by low-voltage USB ports (5V).
High-purity copper wires connect the motor to the power input and the LED control board, enabling smooth operation of both the fan and lights. Proper insulation prevents short circuits, while flexible cabling accommodates compact folding or adjustable designs commonly found in portable models.
Rubber and Elastomers
Rubber components are strategically used to enhance stability and reduce noise. Non-slip rubber feet or pads on the base prevent the fan from sliding on desks or tables, even during high-speed operation. These also act as dampeners, absorbing micro-vibrations from the motor.
In some models, rubber grommets or bushings are placed between moving parts to isolate vibrations and prolong motor life. Additionally, rubber-coated USB cables improve flexibility and strain relief, reducing the risk of wire breakage at connection points—a common failure point in low-quality units.
| Material | Primary Use | Key Benefits |
|---|---|---|
| ABS/Polycarbonate Plastic | Fan housing, blade structure | Lightweight, durable, moldable, easy to clean |
| Aluminum/Steel | Blades, base, support arms | Strong airflow, stability, heat dissipation |
| Silicone | Fan blades, shrouds | Quiet operation, vibration absorption, safety |
| LEDs & PCBs | Lighting system | Energy-efficient, colorful, customizable |
| Copper Wires | Motor and circuit connections | High conductivity, low heat, reliable performance |
| Rubber | Feet, grommets, cable coating | Non-slip grip, vibration damping, durability |
Material Selection Tips for Consumers
Important: While most USB fans are safe, low-quality models may use substandard plastics or thin copper wiring that can overheat. Always purchase from reputable brands and avoid units that emit a burning smell during use. Proper material selection not only ensures performance but also contributes to safety and energy efficiency.
Durability and Care of the USB Fan 2020 with LED Lights
Proper maintenance of your USB fan with LED lighting significantly extends its lifespan, improves energy efficiency, and reduces the risk of lighting malfunctions or electrical issues. The 2020 model, featuring integrated LED lights and compact USB-powered design, combines functionality with modern aesthetics—but like all electronic devices, it requires regular care to perform optimally. Below are comprehensive guidelines to ensure your fan remains reliable, safe, and efficient for years to come.
Regular Cleaning
Dust and debris accumulation on fan blades and internal components can hinder airflow, reduce motor efficiency, and cause overheating. Over time, grime may also contribute to LED circuit issues due to poor ventilation.
- Use a soft, slightly damp microfiber cloth to gently wipe the fan blades, housing, and LED panel weekly.
- For hard-to-reach areas, use a cotton swab or compressed air to remove dust from vents and light fixtures.
- Always power off and unplug the fan before cleaning to prevent electrical hazards and motor damage.
Pro tip: Avoid using harsh chemicals or excessive water, as these can damage plastic components and short-circuit electronics.
Blade Maintenance
The fan blades are critical to airflow performance. Any damage or misalignment can cause imbalance, noise, vibration, and increased strain on the motor.
- Inspect blades monthly for cracks, warping, or looseness.
- Ensure blades are securely attached and spin smoothly without wobbling.
- If blades are damaged, replace them with manufacturer-approved parts to maintain safety and performance.
Safety note: Continuing to operate a fan with broken or unbalanced blades may lead to motor burnout or physical hazards.
Cable and Connection Inspection
The USB cable and port are essential for consistent power delivery to both the motor and LED lights. Damage here can result in flickering lights, intermittent operation, or complete failure.
- Check the USB cable regularly for fraying, kinks, or exposed wires.
- Ensure the USB plug fits snugly into the power source (laptop, power bank, wall adapter).
- Clean the USB port with a dry, soft brush or compressed air to remove dust and improve conductivity.
Expert advice: Consider using a surge-protected USB hub or adapter to prevent voltage spikes that could damage sensitive LED components.
Proper Storage Practices
How you store your USB fan when not in use directly affects its longevity, especially in humid or extreme environments.
- Store in a cool, dry place away from direct sunlight and moisture to prevent corrosion of metal parts and electronic circuits.
- For rechargeable models, store with the battery at approximately 50% charge to avoid deep discharge or overcharging during long idle periods.
- Use a protective cover or original packaging to shield the fan from dust and physical damage.
Key benefit: Proper storage prevents condensation buildup, which can short-circuit LEDs and motors.
Preventing Overheating
Continuous operation without breaks can cause the motor and LED driver to overheat, reducing efficiency and shortening component life.
- Limit continuous runtime to 6–8 hours, then allow the fan to cool down for at least 30 minutes.
- Ensure there is at least 6 inches of clearance around the fan for proper air intake and exhaust.
- Avoid placing the fan on soft surfaces like beds or couches that can block airflow.
Performance tip: LED lights generate heat too—turning off the light when not needed helps reduce thermal load.
Outdoor and Environmental Use
While some USB fans are marketed for portable or outdoor use, most 2020 models with LED lights are designed for indoor environments.
- Never expose the fan to rain, sprinklers, or high humidity unless explicitly rated for outdoor use (IPX4 or higher).
- If using outdoors temporarily, place under a canopy and monitor weather conditions closely.
- Apply waterproof silicone sealant around USB ports and seams only if specified by the manufacturer—improper sealing can trap moisture.
Caution: Water damage typically voids warranties and poses electrical risks. Always check the product’s IP (Ingress Protection) rating before outdoor use.
Professional Recommendation: To maximize durability, treat your USB fan like any sensitive electronic device. Combine regular cleaning with smart usage habits—such as avoiding overuse and protecting cables. For models with non-replaceable batteries, consider retiring the unit after 2–3 years of heavy use, even if functional, to avoid sudden failures. Upgrading to a newer model with improved efficiency and safety features may offer better long-term value.
| Care Routine | Frequency | Key Benefit | Risk of Neglect |
|---|---|---|---|
| Blade and housing cleaning | Weekly | Improved airflow and efficiency | Reduced cooling, motor strain |
| Cable and port inspection | Monthly | Stable power and lighting | Intermittent operation, short circuits |
| Full component check | Every 3 months | Early detection of wear | Potential safety hazards |
| Battery maintenance (rechargeable) | Before long-term storage | Prolonged battery life | Permanent battery failure |
Additional Longevity Tips
- LED Care: Minimize constant LED usage; turn off lights when only airflow is needed to reduce heat and extend diode life.
- Power Source: Use a stable USB power supply (e.g., wall adapter) instead of low-output ports to prevent under-voltage issues.
- Kid and Pet Safety: Place the fan out of reach to prevent accidental damage or injury from spinning blades.
- Firmware Updates: If your model supports smart features via app, keep firmware updated for optimal performance and bug fixes.
- Eco-Friendly Disposal: Recycle old fans at e-waste centers—batteries and circuit boards contain recoverable materials.
Commercial Value and Applications of the USB Fan 2020 with LED Lights
The USB Fan 2020 with integrated LED lighting represents a significant evolution in personal cooling technology, combining energy efficiency, portability, and multifunctionality. These compact devices have transcended their basic utility to become strategic tools across diverse commercial sectors. Their dual functionality—providing both airflow and illumination—makes them highly adaptable to residential, industrial, and promotional environments. As global temperatures rise and energy conservation becomes more critical, the demand for efficient, low-power cooling solutions continues to grow. This guide explores the key commercial applications and value propositions of the USB fan with LED lights, highlighting its role in enhancing comfort, supporting branding initiatives, and improving operational efficiency.
Key Innovation: The integration of energy-efficient LED lighting with quiet, USB-powered fans transforms a simple cooling device into a versatile, multi-purpose tool suitable for both functional and aesthetic applications.
-
Indoor Cooling
USB fans are widely used to enhance air circulation and improve thermal comfort in both residential and commercial environments. These fans serve as excellent supplements to traditional air conditioning systems, allowing targeted airflow in specific zones such as home offices, bedrooms, living rooms, and cubicles. By enabling localized cooling, they reduce the need to lower the thermostat for an entire building, resulting in measurable energy savings—often up to 10–15% on cooling costs. The built-in LED lights add both functional and decorative value, providing soft ambient lighting during evening hours or acting as a nightlight. In office settings, models with adjustable brightness and color temperature help maintain productivity by reducing eye strain and creating a more pleasant work environment.
-
Outdoor Events
Rechargeable handheld USB fans have become essential accessories at outdoor gatherings such as music festivals, weddings, sports events, and community fairs. On hot days, these fans offer immediate personal cooling, enhancing attendee comfort and satisfaction. Models equipped with colorful LED lights not only improve visibility after dark but also contribute to the event’s atmosphere—creating glowing effects that align with themes or branding. Event organizers and sponsors frequently distribute customized fans bearing logos or promotional messages, turning them into effective marketing tools. Their practicality ensures high retention rates, with users often reusing them at future events, thereby extending brand exposure over time.
Pro Tip: For maximum impact at events, choose USB fans with programmable LED displays that can cycle through custom messages or animated logos, increasing engagement and memorability.
-
Emergency Cooling
During power outages, equipment failures, or extreme heat events, USB fans serve as reliable emergency cooling devices. Powered by portable power banks, car chargers, or laptop USB ports, they remain operational when traditional fans and AC units fail. This makes them invaluable in hospitals, nursing homes, data centers, and emergency shelters. Many models feature high-lumen LED lights that double as flashlights, providing crucial illumination during blackouts. Some advanced versions include SOS modes or strobe functions, enhancing their utility in disaster preparedness kits. Their low power consumption allows extended runtime—some models operate for over 8 hours on a single charge—making them ideal for crisis scenarios where resources are limited.
-
Advertising and Marketing
Custom-branded USB fans with LED displays have emerged as one of the most effective promotional products in modern marketing. Unlike disposable giveaways, these fans are frequently used and retained due to their practicality and dual functionality. Companies can personalize them with logos, slogans, QR codes, or even animated LED messages that scroll across the fan blades. Distributed at trade shows, product launches, and corporate events, they generate sustained brand visibility. Studies show that promotional USB fans have a retention rate exceeding 70%, significantly higher than pens or notepads. When designed with sleek aesthetics and quality materials, they also position the brand as innovative and customer-focused.
Marketing Benefit Impact Best Use Case Brand Visibility Extended exposure through repeated use Trade shows, conferences Customer Retention High perceived value increases keep-rate Client appreciation gifts Message Delivery LED displays allow dynamic content Product launches, campaigns -
Travel and Hospitality
In the travel and hospitality industry, USB fans with LED lights offer a compact, energy-efficient solution for guest comfort. Airlines, hotels, and travel gear brands incorporate them into amenity kits or sell them as onboard accessories. Their lightweight design and USB rechargeability make them ideal for backpackers, campers, and international travelers who face inconsistent power availability or lack of air conditioning. Hotel chains use branded versions to enhance guest experience, particularly in tropical or developing regions. Some models include misting functions or aromatherapy features, further elevating the luxury appeal. The LED lighting serves as a reading light or nightlight, adding to the overall convenience and perceived value of the stay.
-
Workshops and Crafts
In workshops, maker spaces, art studios, and craft rooms, USB fans play a crucial role in maintaining a comfortable and safe working environment. They help dissipate heat generated by soldering irons, 3D printers, and other equipment, reducing the risk of overheating and improving air quality. Models with quiet operation and variable speed settings allow users to customize airflow without disrupting concentration. The integrated LED lights provide task illumination, eliminating the need for additional lamps and reducing clutter on workbenches. For DIY enthusiasts and educators, these fans are often incorporated into custom projects or STEM learning kits, demonstrating principles of aerodynamics, electronics, and sustainable design.
Expert Insight: The future of USB fans lies in smart integration—models with Bluetooth connectivity, app control, temperature sensors, and solar charging options are already gaining traction. Businesses that adopt these advanced versions early can position themselves as innovators in sustainability and user-centric design.
Conclusion: Maximizing Commercial Potential
The USB Fan 2020 with LED lights is far more than a simple cooling device—it is a versatile, cost-effective, and sustainable solution with wide-ranging commercial applications. From enhancing customer experience in hospitality to serving as a powerful branding tool in marketing, its dual functionality drives both utility and engagement. As energy efficiency and personal comfort become increasingly prioritized, businesses that leverage this technology stand to gain significant competitive advantages. Whether used for emergency preparedness, event promotion, or daily comfort, the USB fan with LED lighting continues to evolve as a smart investment across industries.
Frequently Asked Questions About USB Fans
Q1: Do all USB fans have LED lights?No, not all USB fans come with LED lighting. While many models—especially those designed for aesthetics or nighttime use—include colorful LED lights with multiple modes (such as steady, flashing, or color cycling), others are built purely for functionality and lack any lighting features.
- LED-equipped fans: Often used for ambient lighting in dorm rooms, offices, or during outdoor activities. These may offer RGB color options and brightness controls.
- Non-LED models: Typically more minimalist, quieter, and focused on energy efficiency and portability.
- Customization: Fans with LEDs allow users to personalize their environment, making them popular among students, travelers, and tech enthusiasts.
If lighting is important to you, check product specifications before purchasing. However, keep in mind that LED features may slightly increase power consumption and noise levels.
Q2: Which is more effective—air conditioning or a fan?The effectiveness of air conditioning versus a fan depends on the environment, cooling needs, and energy considerations:
| Feature | Air Conditioner | Fan (Including USB) |
|---|---|---|
| Cooling Method | Actively cools and dehumidifies air by lowering room temperature. | Increases air circulation, creating a wind-chill effect on the skin. |
| Energy Use | High—requires significant electricity and is costly to run long-term. | Low—especially USB fans, which use minimal power (typically 2–5 watts). |
| Best For | Hot, humid climates and large spaces. | Mild heat, personal cooling, and small areas like desks or beds. |
| Portability | Limited—window units or split systems are fixed; portable ACs are heavy. | High—especially USB and clip-on fans that can be moved easily. |
In summary, air conditioners are better for whole-room cooling in extreme heat, while fans—including USB models—are ideal for energy-efficient, personal comfort during moderate temperatures.
Q3: What are the advantages of a USB fan?USB fans offer a range of benefits that make them a smart choice for personal cooling in various settings:
- Portability: Compact and lightweight, most USB fans can fit in a bag or pocket, making them perfect for travel, commuting, or outdoor use.
- Energy Efficiency: Powered via USB (5V), they consume far less electricity than traditional plug-in fans—ideal for laptops, power banks, or car chargers.
- Eco-Friendly: Lower energy usage reduces carbon footprint, and many models are made from recyclable materials.
- Versatile Power Sources: Can be powered by computers, power banks, wall adapters, or even solar chargers—great for camping or emergencies.
- Quiet Operation: Most models operate at low noise levels, suitable for offices, libraries, or nighttime use.
- Affordability: Generally more affordable than larger fans or cooling devices.
These features make USB fans an excellent solution for students, office workers, travelers, and anyone seeking convenient, on-the-go cooling.
Q4: Can a fan help prevent heatstroke?Yes, a fan—especially a USB fan—can play a supportive role in preventing heatstroke, though it should not be relied on as the sole preventive measure.
Fans help by:
- Enhancing Evaporative Cooling: Moving air increases sweat evaporation, which helps the body regulate temperature more effectively.
- Improving Air Circulation: Prevents hot, stagnant air from surrounding the body, especially in poorly ventilated areas.
- Providing Immediate Relief: Offers a cooling sensation during outdoor activities, workouts, or in overheated environments.
However, in extremely hot and humid conditions (above 90°F/32°C with high humidity), fans may not be sufficient since sweat evaporation is limited. In such cases, air conditioning, shade, and hydration are critical.
Key Tips to Prevent Heatstroke:
- Stay hydrated with water or electrolyte drinks.
- Take breaks in cool or shaded areas.
- Wear breathable clothing.
- Use a fan in combination with other cooling methods (e.g., cool towels or misting sprays).
Choosing the right USB fan involves evaluating several key features to ensure it meets your specific needs:
- Size & Portability: Consider where you’ll use it—compact models are great for bags, while larger ones may offer stronger airflow for desks.
- Noise Level: Look for fans rated under 40 dB for quiet environments like offices or bedrooms.
- Speed Settings: Multiple speed options allow flexibility—low for gentle airflow, high for maximum cooling.
- Adjustability: Swivel heads or flexible necks let you direct airflow precisely where needed.
- Battery vs. Direct USB: Battery-powered models offer cord-free use, while direct-USB fans are simpler and always ready when plugged in.
- Durability: Check for sturdy build quality, especially if used frequently or carried around.
- Additional Features: LED lights, misting functions, or clip-on designs can enhance usability depending on your needs.
Taking these factors into account ensures you select a fan that balances performance, convenience, and value.
Q6: Are clip-on USB fans worth it?Yes, clip-on USB fans are a highly practical and worthwhile investment for many users due to their unique design and versatility.
Advantages include:
- Hands-Free Operation: Clips securely onto desks, bed frames, strollers, car headrests, or backpacks, freeing up your hands.
- Targeted Airflow: Positioned exactly where you need cooling—ideal for focused relief during work, sleep, or travel.
- Space-Saving: Perfect for small living spaces, dorm rooms, or vehicles where floor or table space is limited.
- Portability: Lightweight and compact, they’re easy to carry and store.
- Energy Efficient: Like all USB fans, they use minimal power and can run for hours on a power bank.
Whether you're studying, commuting, camping, or just relaxing at home, a clip-on USB fan delivers convenient, personalized cooling—making it a smart addition to your daily routine.
Q7: How can you make a USB fan last longer?With proper care, a USB fan can provide reliable service for years. Follow these tips to extend its lifespan:
- Avoid Humid & Dusty Environments: Moisture can damage internal circuits, and dust buildup can strain the motor. Store it in a dry, clean place when not in use.
- Regular Cleaning: Wipe down the blades and housing with a soft, dry cloth. Use compressed air to remove dust from vents and motor areas.
- Prevent Motor Overload: Don’t run the fan continuously at maximum speed for extended periods unless designed for it. Allow short breaks during prolonged use.
- Use Compatible Power Sources: Stick to standard 5V USB ports or certified power banks. Avoid cheap or unstable chargers that may deliver inconsistent voltage.
- Handle with Care: Avoid dropping or bumping the fan, especially models with moving parts or hinges.
- Store Properly: Keep it in a protective case or pouch when traveling to prevent damage.
By following these maintenance practices, you’ll maximize performance, efficiency, and longevity—getting the most out of your USB fan investment.









