Feature Highlights: 1. 3 Adjustable Speed Levels – Choose from low, medium, or high airflow (3.5/3.88/4.4 CFM) and rotation speeds (3600/4500/5350 RPM) to match your cooling needs. Noise levels remain low at 46/50/54 dB, keeping ventilation strong but quiet. 2. Wide Compatibility – Perfect for cooling PCs, laptops, TV boxes, game consoles, routers, projectors, and more. Helps protect your electronics from overheating and extends their life. 3. USB-Powered & Portable – Runs on any 5V USB port, so you can use it almost anywhere. Just plug it in—no extra adapters needed. (Note: For best performance, avoid connecting through a USB hub.) 4. Safe & Durable Design – Features metal grilles on both sides to protect fingers and keep the fan secure. The cable is reinforced at the base to resist wear and prevent fraying. 5. Premium Build & Compact Size – Made with a rust-proof black metal grill and smooth double ball bearings for long-lasting use. Its slim profile (40×40×25 mm) fits neatly on desks, shelves, or inside cabinets. Product Details: This 40mm USB fan offers three speed settings to deliver just the right amount of cooling—whether you need gentle airflow or maximum ventilation. Built from quality materials, it’s designed to be durable, safe, and quiet. The all-metal grille and protected wiring add extra reliability, while the USB power makes it easy to use at home, in the office, or on the go. Ideal for keeping electronics, small spaces, or work areas cool and well-ventilated. Specifications: - Airflow: 3.5 / 3.88 / 4.4 CFM - Speed: 3600 / 4500 / 5350 RPM - Noise Level: 46 / 50 / 54 dB - Power: 5V USB - Size: 40 × 40 × 25 mm - Material: Metal grill, double ball bearing, reinforced cable - Included: 1 × USB fan