Inconspicuous: the Zippy PSM-6600P
Compared to some other models, the Zippy PSM-6600P seems inconspicuous: one fan and the power supply socket is all that adorns the device. There is no power switch - clearly, this EPS12V power supply is firmly headed for the workstation market. The 80 mm fan is temperature-controlled.
No special features: The power supply only has a recessed power receptacle and fan.