40mm USB Fan 2pcs, 5V Mini Cooling Brushless Fan with Speed Control

Wide Application: perfect for cooling laptop, wifi tower, 3d printer, cable modem, steam deck, vivarium, soldering, power amps, growing mushroom,etc. Ideal for small space cooling and exhaust as a tiny fan | Usb compatibility: The micro fan can easily draw power from a USB adapter, a power bank, a phone adapter, a game console's USB port, or any USB dapter, making it super convenient to use | Compact & Mini size: This mini usb fan fits tight spots like computer cases and routers. It's also great for small desk or computer gaps to cool electronics. Heads up: The 40mm fan runs fast for cooling, so it can be a bit noisy | Extensive accessories: The 5v 40mm fan includes a pair of USB fans, a 2-in-1 power cord for simultaneous control, and a protective iron mesh to keep your hands safe | Specification: 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