Obávám se, že D830 to bohužel nemá.

Citace : It turns out this key is used to activate the Dell equivalent of the “ThinkLight,” that is, a keyboard illumination lamp. Unfortunately, this feature is obviously not on the Latitude D830. Instead, it can be found only on the ATG model. I really wish they would use a different key set for their different models.

ZDROJ : http://forum.notebookreview.com/show....php?p=2441352