I think that the power adapter was probably first designed for the North American market. For that market, the design is not flawed.


IMHO, this choice is more an aesthetic rather than a functional. Also it offers a choice for a usb charger which is intented to be connected directly to a wall socket e.g. bedside (and not on a power strip). Both designs have pros and cons. Side end photo accidental knocking (+) Better (-) more exposused interferes with adjacent outlets (-) interferes ...


Lenovo ADL170NLC3A has an Energy Star V (ES 2.0) rating. Energy Star states to get that rating for nameplate output power ($P_{no}$) > 45W, the Minimum Average Efficiency in Active Mode ≥ 87%. At nominal conditions of 170W, 20V @ 8.5A, and a minimum efficiency of 87% implies 195W input. So worst case, the ac charger consumes 25W. The AC adapter is a ...

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