Qualified replacement for Original one- Acer charger, kp04501017 charger acer chromebook, kp0450h006 acer charger, acer aspire a515-44 charger, acer chromebook charger, acer aspire a515-55 charger, aspire a115-31-c0yl charger, n15q9 acer chromebook charger. ADP-45FE F ADP-45HE PA-1450-26 these models have two connector size. One is 5.5*1.7mm, the other is 3.0*1.1mm.This adapter connector size is 3.0*1.1mm.It is smaller than 5.5*1.7mm (please check the third connector size photos). Before you buy it, please check the connector size of your original adapter!!!!!!