The hybrid module pretty much deal will all the voltage rail generation on the motherboard, with power sources coming from both the power adapter, and the battery. It uses some external components, a couple MOSFETs that are around it, and a LT1070 to generate the +12V rail. 1989 vintage DC/DC converters and MOSFETs were in their infancy, today it really is no big deal so entirely bypassing the whole thing with a power supply system designed with reliable and easy to source components seems like a good idea.That running the Portable in the old, received wisdom (idiocy in this case) no battery/higher output AC Adapter state has killed so many Portables I'm wondering about that? @techknight what components would be at risk of being taken down in said catastrophic failure? IIRC Hybrid would be the primary point of failure?