Seasonic supply a Hong Hua 92mm fan inside the unit. This is a FDB fan rated at 0.46A @ 12V with a maximum rotational speed of 3,500rpm.
Below - a High Resolution Gallery of the internal layout of the Power supply.
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This power supply is an inhouse Seasonic design with high grade Japanese capacitors throughout primary and secondary stages. The primary stage Japanese Capacitor is made by Rubycon, rated 105C, 420V and 440uF. There is a single heatsink which gets cooled directly from the fan above. The soldering across the board is very good throughout.
The unit is equipped with OPP, OVP, UVP, SCP, OCP and OTP protection.