Power Supply for general project use. North American Style Plug 12VDC, 2 Amp, Center Positive Polarity, 5.5x2.1MM PS - You might want one of these too.
This is an adapter that converts a 2.1/5.5mm Jack into a 2.5/5.5mm Plug. This will adapt our 2.1/5.5mm plug power supplies into a 2.5/5.5mm plug.