... convenient function, *With 6 color Mini tower fan TZ-USB580B USB desk fan by USB line ---New upgrade version Feature:: ... , speed, LED) . 3 speeds, low, medium and high, press the spreed to change,an LED light ... 1) Plug the USB line(included) into the fan and into an laptop USB,or place 3AA batteries.2) ... USB line(included) into the fan and into an laptop USB interface5) Place the fan on a dry, level ...