I have several of these. 60 and 90 Watt laptop type power bricks that are 'programmed' to a certain output voltage and current limit by replacable tips. I've also got a slug of tips for each (plus some tha appear to go to different versions of these supplies which I don't have).
Both product lines appear to be discontinued by their respective manufacturers and no longer provide support. But tips are still available for different devices... if you know what to search for.
Does anyone have charts of tip numbers vs laptop models? Or even tip numbers vs output voltage and connector dimensions that they might have rescued before iGo and Targus discontinued their lines.
Also, just for hacking purposes, has anyone reverse engineered the tip internals (usually just a couple of resistors that the supply 'reads' through the cord to set up output parameters). One could conceivably hack together tips for new devices if one knew how to progam the supply. Voltage is easy to figure. Overcurrent is a bit trickier.