Laptop chargers for an acer laptop any one can assist me ty?

Ok, my cousin laptop its an Acer and her charger broke, where can she acquire a new one? i live in Boston,ma there a microcenter and a bestbuy i can travel to.. any help? i try searching on there site did not get overmuch help doing that. not websites on the web i do not have a credit card.. i have a acer laptop as well but i dont know if it will work against her laptop.. she lives in puerto rico, so i can't look in her house and endeavor it out... are all acer laptop universal with the chargers? meaning any acer charger module work