This is a DELL docking station #PR01X , P7928. This port replicator makes connectivity easy with a variety of ports including VGA, DVI, S-Video, Parallel, Serial, PS/2 (x2), Headphone, S/PDIF, USB 2.0 (x4), RJ-11, RJ-45 and a D/Bay connector. This device requires a single 90 watt AC adapter for power, which is NOT included.
It's in excellent working condition with no flaws to note. This was used by one adult owner.