2Pack Wathai 40mm x 10mm Mini USB Fan with Speed Control 5V Small Computer USB Fans for Welding Helmet, Aquarium, Terrarium, Camera, VR Receiver DVR PlayStation Xbox Computer Cabinet Cooling

Additional Details from the Manufacturer

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More features

• Small USB fan: This 40mm mini USB computer cooling fan is ideal for DIY cooling in tight spaces, perfect for micro and computer fans, mini and small box fans, USB mini fans, and PS4 cooling
• Tiny fan: Suitable for ventilation of VR glasses, TV box, Raspberry pi, Router, Small PC Case, projector, hard hat and other small electronic equipment ventilation
• Computer fan usb powered: It can run these right off the laptop without an external power source. Usb fan for desk, no funky wiring, just plug it into the PS4 USB port and tuck the wires aside
• 2 In 1 Usb mini fan: Two 40mm fans with adjustable speed control for computers, home entertainment systems and other electronic devices running at ideal temperatures and optimal speeds
• 40 x 40 x 10 mm ( 1.57 x 1.57 x 0.4 in. ) | Rated Voltage : 5V | Airflow: 6.12 ±10%CFM | Noise: 25dBA | Speed: 5500 RPM