E-best 100% New Laptop Ac Adapter Compatible with Asus 19v 2.37a 3.0x1.1mm 45w Fit for Ux21,ux31,ux31k,ux21e,ux32,ux42 Ux31e-----adp-45aw AC Input: 100 ~ 240V 50 ~ 60Hz;DC Output: 19V 2.37A 45W Attention Please for all of the buyer as points 1, Adapter Voltage and Amper is 19V 2.37A 45W 2,DC jack size is 3.0x1.1mm ;please double check it before you buying it , if your adapter's DC Jack connector size is not 3.0x1.1MM ,please don't buy it ,because this adapter can not fit for your laptop , you don't need waste money to try . Compatible with ASUS P/N: ADP-45AW A, EXA1206CH, 0A001-00230300, 0A001-00230400, 0A001-00230300-0A200-00021900 Compatible with ASUS Zenbook UX21UX31UX31KUX21E UX32UX42 UX31E Compatible with all ASUS TaiChi models.Asus ADP-45AW 45W AC Power Adapter Supply Cord/Charger fit models: Asus ZenBook UX21Asus ZenBook UX21EAsus ZenBook UX21E-DH71Asus ZenBook UX21E-DH52Asus ZenBook UX21E-KX004VAsus ZenBook UX31Asus ZenBook UX31EAsus ZenBook UX31E-081A2677MAsus ZenBook UX31E-DH52Asus ZenBook UX31E-DH53Asus ZenBook UX31E-DH72Asus ZenBook UX31E-RSL8Asus ZenBook UX31E-RY012VAsus ZenBook UX31E-RY003VAsus ZenBook UX31E-RY009VAsus ZenBook UX31E-XH51(Not Compatible with UX51VZ, )