Power and ports - Input 5V 1A via USB power source. USB female output port on the unit lets you power a second device from the same source, such as a second USB fan or a USB light. Single speed cooling - USB desk fan with a single, steady speed for immediate cooling. Provides refreshing airflow to help you stay comfortable on hot days. Compatibility and setup - Designed for USB powered use. Works with computers, USB wall chargers, and portable power banks. No separate adapter required. Compact and practical design - Space saving desk fan that fits easily on a desk, nightstand, or small workspace. Simple plug and play operation. Use scenarios - Office or study: connect to a computer or USB charger to reduce desk heat while you work. - Home or travel: powered by a power bank for reliable cooling on the go. - Late night reading or work: use the USB output to power a small USB light for hands-free illumination while the fan runs.