About this item Output: 19V 2.37A 45W; Input: 100V-240V 50/60Hz; Connector Size: Small pin 3.0*1.1mm Compatible with 45W Acer Aspire 1 3 5 N20C5 N23C3 N20C4 N19H2 A315-24P-R7VH A115-31 A115-32 A115-32-C96U A314-23P A314-23P-R3QA A314-35 A314-36P-35UU A315-35 A315-23 A315-24P A315-43 A315-35 A317; A515-44 A515-46 A515-54 A517-52 A515-55 A515-56 A515-44-R41B A515-45-R74Z A515-46-R3UB A515-55-56UK A515-56-32DK A515-56-36UT A515-57-53T2 Compatible with 45W Acer Chromebook R11 C720 C731 C738T C740 CB3-111 CB3-131. Compatible with P/N: ADP-45FE F A13-045N2A PA-1450-26 AK.045AP.075 Secure and Stable: All products go through strict quality control procedures to ensure safety, including short circuit, overvoltage, overcurrent, and internal overheating protection. Charging does not harm the device. How to choose the right charger: 1. Check your laptop specs to make sure it uses the 45W power supply, 19V 2.37A 45W. 2. Check the charging port of your laptop, ensure that the charging port of your l