This comes to us from Best Buy. In all likelihood a display unit in one of their stores, it still has the specification sticker on its side. We have paired it with two 19" monitors (pictures taken with our home monitor - a set of two is part of the deal), keyboard / mouse, a speaker, plus all the cables required to make this work. Make / model of the monitors may vary depending upon what is available at the time of sale, but we guarantee the size will be 19".