1.double USB,power switch 2.with LED 3.35-70 CFM,cooling quickly Product namelaptop cooling standModelLX-799 ColorBlackMaterialPlastic and wire nettingN.W930gProduct size36*29*5.5cmQTY/CTN10PCS/CTNCarton size64.5*33*39cmFan size100*100*15mmx1+60*60*15x4Fan speed700-1400 RPMAir flow45-70 CFMRated current0.22-0.38ARated voltage5VUSB port2x2.0 USBUse in laptopLess than 17 inch(include 17)Advantage1. ...