Fan
From NAS-Central Buffalo - The Linkstation Wiki
The Kurobox case has a built in 40mm fan, which can run at variable speeds controlled through the microcontroller. Variable speeds means either slow or fast.
The fan used in the Kurobox is a ADDA AD0412LX-G76 (12V-70mA, 4,800rpm) which measures 40mm x 40mm x 10mm.

