Power supply polarity: Inside positive outside negative,inside x(+) outside i(-).
Input : AC 110V~220V, 50/60 HZ.(Please make sure the input voltage is in the range, or it will be blown.)
Output : DC 9V, 1000mA. (Recommend the use of current is less than 1A, otherwise easily damaged)
Cable length : 40 cm
DC Plug Dimension : 5.5mm * 2.5mm
DC Plug polarity : Positive Inside, Negative Outside.