SeaSonic Electronics GX-1000W 80-PLUS Gold PCIE5 Modular Power Supply - Manual (Page 3)

3. Position your PSU
3.1. Bottom of the case
The fan control setting determines the optimal PSU placement.
Fanless PSU
The PSU must be mounted into the
computer case with the ventilation
top cover facing UPWARD.
In “Hybrid” mode
Seasonic recommends to install your
PSU with ventilation top cover facing
UPWARD, towards the direction of the
motherboard. This will ensure natural
heat dissipation.
In “Normal” mode
Although the direction of mounting is
optional, it is not recommended to
install the PSU with the ventilation top
cover facing downward if there are
no ventilation holes on the bottom of
the case. There should always be
enough clearance left between the
PSU and the bottom case panel.
3.3. Top of the case
3.2. Flat Desktop-, SFX- or ITX systems
Seasonic recommends the PSU to be
mounted with its ventilation top cover
facing DOWNWARD.
In general, it is recommended to mount
the PSU with the ventilation top cover
facing the motherboard. Due to the
different varieties of case layouts,
however, please also consult the case
manufacturer's instruction manual for
more information.
To learn about the ventilation of your computer
case, please refer to the case manufacturer’s
instruction manual.