USB Output: 5V 2.1A. 6 DC Plugs of different sizes are easy to connect and practical to use. (Note: DC Plug Polarity: inner Positive(+), outer Negative(-), Polarity is Not reversible.). Output DC Plug: 2.5 0.7mm, 3.0 1.1mm, 3.5 1.35mm, 4.0 1.7mm, 5.0 2.1mm, 5.5 2.5mm.
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