A display apparatus, which has an input port and an output port for connection with at least one among a plurality of display apparatuses that constitute a video wall, and easily updates setting information by exchanging the setting information with a display apparatus connected by the input port and designated as a master display apparatus and a display apparatus connected by the output port and designated as a slave display apparatus, and a control method thereof. Thus, the setting information for the plurality of display apparatus connected together can be synchronized much easily.