I have a P4 Toshiba 5105-S607 with a P4 1.7GHz and an NVIDIA GeForce4 Go... NO issues finding an adapter for this model.
No problems using the Empower port (e.g. no fault/trip of the plug, etc) even when using the most power consuming modes (e.g. playing a 3D game, hence P4 at max freq and NVIDIA chip running)
Also Centrino (previously called Banias) is a P4 core with MUCH better power consumption, hence less issues with beefy power supplies will be launching Mid-March.
If any of you are SERIOUSLY considering a P4 system you will travel with I would hold off for that. Current desktop P4's are horrible on battery life and heat in a mobile system.
[This message has been edited by NickP 1K (edited 02-11-2003).]