HDMI is a single relatively small input connector that combines digital video and audio in one single connector. The video component is actually identical to DVI but simply in a different connector. You can get DVI to HDMI adapters in both directions, either as cables with DVI at one end and HDMI at the other end, or as a small 2-inch adapter that you put on the end of a cable. Of course, DVI is video only (no audio), and a full DVI connector (DVI-I) is capable of carrying both digital and analog signals (e.g. 15-pin VGA analog), but the signals in HDMI are the digital signals only (DVI-D) and do not include any analog video signals.