DTOL USB Mini Desk Cooler Fan 6.1 Inch Black 1 Pack No software is needed to run this, it simply draws power from the USB port. Metal blades provide whisper-quiet operation. Cable Length : 1.2M / 3.93ft. Tilt adjustable head allows you to focus airflow where you need it. 360-degree adjustable tilt stand. USB power plug, ON/OFF switch at the back. Material : Metal.