Features:1) With 4-port USB hub2) USB 1.1 or 2.0 hub3) 3 fansSpecifications: 1) Material: PC 2) Rated voltage: 5V DC 3) Speed: 3,100 ± 10rpm 4) Air flow: 52CFM 5) Noise: 21dB 6) Bearings: sleeve, 1 ball, 2 balls7) Cooler dimensions: 300 x 230 x 20mm 8) DC fan dimensions: 60 x 60 x 10mm 9) Weight: 500g

Laptop Coolers 2