Re: Inspiron 7559 ac adapter with Inspiron 5576
If the connectors are the same (they likely are) and the power rating is the same OR GREATER, yes.
What you cannot do is substitute a lower-power adapter. Systems that come with a separate GPU generally require 130W or more power -- systems that have integrated video can use as little as 65W adapters. You can't substitute a 65W adapter for a 130 W one, but you CAN substitute a 130W adapter for a 65W one.