About this item Input: AC100-240V 50-60 Hz 1.5A; Output: 19V-4.74A; connector: 4.5*3.0 mm; (Please Confirm the Specifications and Plug Size Before Purchasing!!! Our plug is small) Compatible with models P2440UQ P2540 P2540N P2540NV P2540U P2540UA P2540UA-AB51 P2540UB P2540UV PA-1650-48 Q524 Q524U Q524UQ Q534 Q534U Q534UX Q534UX-BI7T22 Q534UXK UX51V UX51VZ. Adopts intelligent IC management, ensuring a stable charging process; the power is automatically cut off when fully charged, eliminating concerns about overcharging. Package includes: 1x AC adapter & 1x AC power cable. Dimensions: 6.73 x 3.86 x 1.93 inches.