CLJ1600 "Less Fusing" option temperature specification?

Hi all,

I know the fusing temperature of the CLJ1600 is 410ºF in normal mode.

However, there's a setting in the HP Toolbox that let us specify a "Less Fusing" option that, according to the information in the HP Support site, determines the use of a lower fusing temperature.

The thing is that this lower fusing temperature is never specified.

Can anyone please tell me what it is? There's a media that I would like to use but it states that the printer must be operating below 400ºF.

Thanks

José