I am not completely certain about this compatibility without the exact model of the X515. Some ASUS X515s are compatible with a 45W charger, but other versions require a different power output or plug. The safest thing to do is to check the full model of your computer, for example X515J, X515JA, or X515EA. If your X515 corresponds to one of these models and it does indeed accept 19V with 2.37A, this charger may be suitable.