This ventilation system for mobile PC is a whole. The fan blades are more than twenty centimeters from one end to the other (about 10,3cm of the end of the blade center) s the air that emerges is more than enough (Bought for HP Pavilion dv7-6170sf - Difference width: 1.6 cm less in height difference. 8.5cm more) It is robust with its metal grid. Its frame is glossy plastic that easily mark the fingers, but it cleans well.
The pros:
-Variateur Speed.
-Shortly Noisy max mode.
-Do Not vibrate.
-3 Substantial USB ports. One is taken for the PC power supply.
-Inclinaison Of the "table" perfect for viewing the keyboard and the laying on of hands.
The -:
-Adaptateur Sector ZM-NC3000U over 20. To release a USB I find that c is a price to pay.
Summary: In all good product to avoid heatstroke our laptops.
Recommended.
Hopefully you have been helpful.
Sincerely.