E-best Laptop Ac Adapter for Asus 19v 2.37a 45w 4.0mm*1.35mm Fit for Asus Ux21a,ux31a,ux32a ,Ux32v Series--- - Adp-45aw A This is 19V 2.37A 45W 4.0mm*1.35mm ,the Asus Part Number : ADP-45AW A;It is good for Asus Zenbook UX21A,UX31A,UX32A;UX32V Laptop Ac Adapter for Asus 19v 2.37a 45w 4.0mm*1.35mm Fit for Asus Ux21a,ux31a,ux32a ,Ux32v Series--- - Adp-45aw A Compatible with ASUS Zenbook UX21A, UX31A, UX32A, UX32VD, UX301, U38N, U38DT, UX42VS, UX50, and UX52VS ; ASUS VivoBook X202, S200, and Q200 -series Attention please the below information for all of them buyer 1, this is 19V 2.37A 45W AC adapter for ASUS Zenbook and Chai Series laptop 2, DC jack connector size :4.0x1.35mm please double check the DC jack size before you buying it . if the DC jack size is not 4.0x1.35mm, please don't buy it because this adapter can not fit for your laptop ,don't waste your money! Warranty:12 months warranty,we can replace new one with my client because of the bad quality during the warrnaty.