Features：
Small and portable
Hidden retractable design
USB powered
4 kinds of interface,it can be applied to all kinds of laptops
4pcs foot pad,put them under the laptop to keep steady
Extend the service life of laptop

Specifications：
Product Dimensions:  150 * 88 * 38mm
Fan Size:                   82 * 74 * 24mm
Rated voltage:          5VDC
Consuming Power:     2.5W±10%
Fan Speed​​:                 3000RPM±10%