The "Automobile Adapter" indeed is only a switching power supply. I still own mine, with the proprietary Compaq connector chopped off. It's laying in my junk dr

The "Automobile Adapter" indeed is only a switching power supply. I still own mine, with the proprietary Compaq connector chopped off. It's laying in my junk drawer and inside is guest a boring switched step up converter. It could connect to the docking station just as easy as to the laptop itself, the connectors are identical on both.