... such as laptops, DC players, phone chargers etc. USB charging port offers an additional choice for user. It ... the power on·Input & output isolation·Muti-protection function·USB output port: 5V500mA ( optional)·Socket type : A,B ... ,C,D,E,F,G ,H,I (optonal) Protection Features: ·Low voltage protection· ... LVD,RoHS, E-markWarranty18 monthsNote: if without USB, the model is CAR7502