HI-Speed USB Cooler Cooling Flexible Neck Fan For Notebook Laptop PCs PDAs Plug and play, no external power supply is needed.Low nosie and heat operation Compatible with USB1.0 and USB2.0 Power supply:5DVDC directly from the USB port Compatible with PCs, notebooks, and PDAs Gently adjust the flexible neck of USB light or fan to position the fly light or wind anyway you wis