DC/DC AUTO Input: 12V 24V Output: 16V 2.5A, Connector Head 6.0X4.0mm, Fujitsu Auto Adapter, Works with Fujitsu LifeBook 500 series. Fujitsu Product Number: FPCCBA01A Fujitsu Part Input: DC 12/24V (Negative Grounded Car Only) Output: DC 16.0V / 2.5A (Center Pin +) Works with Fujitsu LifeBook 500 series. Note 1: This unit can not be used with a "positive" grounded car. Note 2: Be sure the car engine is started before using this unit. Note 3: Do not use above 40 degrees Celsius. ,