Brand new 12V 1A switching power supply. It has a 2.1mmx5.5mm tip which is standard for most applications.Also has a green led light to indicate it is on.Free shipping in the US. Save money and choose multiple quantities from the drop box.You can choose from 1, 3, 5, 10, 20, 50 and 100 pcs. The more you buy the cheaper it is.