A semiconductor device and method of manufacture is provided including a redistribution structure; a plurality of core substrates attached to the redistribution structure using conductive connectors, each core substrate of the plurality of core substrates comprising a plurality of conductive posts; and one or more molding layers encapsulating the plurality of core substrates, where the one or more molding layers extends along sidewalls of the plurality of core substrates, and where the one or more molding layers extends along a portion of a sidewall of each of the conductive posts.