THE ARCTIC BREEZE PRO
The ARCTIC unit pushes air with a small 7-blade 92mm fan capable of reaching speeds up to 1800RPM.
The section behind the fan seems to be made out of metal but is in fact plastic (still i like the craftsmanship ARCTIC placed on an simple USB desk fan).
As you can see the Breeze Pro is quite flexible.
The control knob can adjust the speed of the Breeze Pro from 800RPM up to 1800RPM.
Perhaps the most important feature of the Breeze Pro is present around its base since it comes with 4 extra USB 2.0 compatible ports.
Although at the rear of the unit there's an AC power adapter port in case you adjust more USB devices that it can handle ARCTIC doesn't ship it with the unit (would increase the cost but I’d rather they did).
You can route the extra cable beneath the base as seen above.
The ring that surrounds the control knob turns blue when you attach the unit onto a USB port.