80x80x10.8mm DC Cooling Fan (2-pin Connector)

Works as intended.

My first oDROID N2 always ran hot unless I stuck it right in front of the A/C in the home network closet. That works in there, but for a portable unit you need something more active. This works as intended, dissipating the heat, and the screws/standoffs they give you make for some nice little legs.