About this item Connector Size: 3.0 * 1.1 mm Input: AC 100-240V 50-60Hz Output: DC 19V-3.42A 65W Compatible with 19V-2.37A 45W Compatible with Aspire 3 models: A315, A314, A315-24P, A315-24P-R7VH, A315-58, A315-59, A315-23, A315-21, A315-31, A315-35, A315-41, A315-43, A315-51, A315-52, A315-53, A317-54. Compatible with Aspire 5 models: A515-44, A515-45, A515-46, A515-54, A515-55, A515-56, A515-54G, A515-58, A515-58PT, A517-52. Compatible with 45W Chromebook R11 models: C720, C731, C738T, C740, CB3-111, CB3-131, CB3-531, CB3-532, CB5-571, CB3-421, CB3-431, CB5-311, Spin 1 3 SP111-31, SF113-31, SF114-32, SP314-51, SP314-52, SF315-52, SF314-42, SF314-54, SF314-55. Dimensions: 7.4 x 4.96 x 1.65 inches.