Passive cooling to the rescue

Switches deserve great cooling too. This Buffalo LXW-10G2/2G4 features two 10GbE and four 2.5GbE ports and comes with a rather small heat sink. Surprisingly the copper option option couldn't handle the heat either and the big guns had to be brought in. A second giant aluminum heat sink - twice as big as the original case - is finally able the keep things cool and quiet. 

Source: imgur