aceyoon Double 140mm USB Cooling Fan with Digital Temp Control 5V PC Fan

140mm Cooling Fan: This 140mm USB fan comes with a digital thermostat to monitor real-time temperature data. It covers -50°C to 110°C with ±0.1°C precision, has cooling and heating modes, and supports adjustable startup stop temperature calibration and delayed startup functions.
Compact 14cm Fan: Overall dimension measures 14 x 14 x 2.5 cm, fitting narrow gaps inside computer cases and router racks. Four bottom shock absorbing pads lock the fan firmly to avoid sliding even during high-speed long-time cooling.
Protective Painted Metal Safety Grill: The surrounding painted metal grill creates a barrier to stop fingers and wires from contacting spinning fan blades to avoid scratches and wire damage. The solid metal frame delivers reliable safety protection for daily electronic cooling.
Smooth Quiet Hydraulic: Adopts premium hydraulic bearings to keep steady low-noise rotation for non-stop long-hour use. Stable airflow effectively removes excess heat for desktop computers, wireless routers and other small home electronics.
Universal Heat Dissipation: This USB ventilator cools most common small electronics including PCs, wireless routers, media boxes and DVR equipment. It acts as a handy heat control accessory to meet daily heat dissipation demands at home and workspaces.