This Total Micro 45W AC adapter meets or exceeds OEM specs and is for the Acer AO1-131, AO1-131M, AO1-431, C730, C738T, C810, CB3-531, R5-471T, R7-371T, SF314-51, SW5-173, SW5-271, V3-331, V3-371, V3-372, V3-372T. Lifetime limited warranty