There is only one nonessential setting, the minimum fan speed, which can be set to "low" or "off." The setting is bit of a misnomer — "off" turns the fan off completely; it will not turn on at all no matter how hot things get.
We don't know exactly the environment or place users use the our product.
We always consider worst case and novice user.
Many unskilled/novice user don't know how to set up the BIOS and read the manual.
We knew that some user worry when fan is not working and case is some hot - although they know it is fanless system,
because they has never experienced fanless system.
But, expert or skilled user, they can set up the BIOS easily and understand about characteristic of fanless system.
So, we decided default fan setting as 'slow'.
the ECOPC used about 2W more on average. This is likely due to a less efficient power supply. The T1610 shipped with a Seasonic DC brick.
We considered its size, because higher power DC brick is bigger than our one,
but we'll re-test power supply and be looking for more energy efficient power supply, ASAP.
And, if you disconnect the monitor cable, use headless system as home server w/Amahi Fedora12, power consumption is reduced.