Pull heat system away from the notebook and prevent the CPU from overheating during use. An accessory for laptop computers which helps reduce their operating temperature and prevent the CPU from overheating during use. Easy to go, no power adapter necessary, conveniently powered through USB port. Compatible with all notebooks / laptops. Ultra slim design made of acrylic. Three large high performance quiet fans. Cool blue light. Air Flow: 30 CFM Fan Speed: 2800 rpm Support low noise: 21 dba Three Fan Size: 6 * 6 * 1.5(cm)