HP Compaq 90 Watt AC Adapter 391173-001 384020-001 - HP Compaq 90 Watt AC Adapter 391173-001. Original 90 Watt AC Adapter for HP Compaq Notebooks. Part Numbers: 384020-001, 384021-001, 384020-003, 391173-001, 409992-001, ED495AA, PA-1900-18H2, PPP014L-SA, Compatible Notebook...