... usb fan metal guard and stand for protect great wind with low noise,quiet small and easy to use OEM ... DC 5v quiet usb fan with metal guard and stand 1.Size: 149.73*96.3*146.5mm2. ... control Easy to adjust angle for comfortable windSmall and portable,use it anywhere there's usb device( ... of brushless DC cooling fans, AC cooling fans and blower fans, which are widely applicable to machine ...