Brand‎GenericModel‎ACER 19V – 2.15APackage Dimensions‎23 x 9.1 x 6.6 cmItem part number‎AC04002Wattage‎40/45 WattsPower Source‎Corded ElectricPin Size‎5.5*1.7mmWarranty‎06 MonthsItem Weight‎350 gRating: 19V 2.15A 45W Pin Size: 5.5mm x 1.7mmCompatible Models:Acer Aspire E5-771Acer Aspire ES1-711Acer Aspire E5-721Acer Aspire E5-731Acer Aspire E5-731GAcer Aspire E5-771GAcer Aspire ES1-411Acer Aspire ES1-512Acer Aspire P276-MGAcer TravelMate P276-MAcer Aspire E5-573-35AQAcer Aspire E5-573-516DAcer Aspire E5-573-57DVAcer Aspire E5-573-754KAcer Aspire E5-721-20GJAcer Aspire E5-721-64T8Acer Aspire E5-721-66XJAcer Aspire ES1-512-C5S4Acer Aspire ES1-512-C96SAcer Aspire ES1-711-C7TLAcer Aspire ES1-711-P1UVAcer Aspire ES1-711-P2UGAcer Aspire ES1-711-P3YRAcer Aspire R5-471T-52EEAcer ASPIRE SERIES E5-573-3870Acer Gateway NE512If your laptop model is not listed here, kindly match with the output rating & output pin type from your old ac adapter, as given above. If it is same, you may buy this adapter