USB 3.0 to HDMI™ 4K Graphics Adapter
CSV-2302H – SenseVision USB Graphics – USB3.0 to HDMI™ 4K
DisplayLink does have MAC OS drivers.
They normally become available later than the windows drivers, but they will become available …
For the DL-5500 chip which is in the CSV-2302H, you can find them here: http://www.displaylink.com/downloads/mac_downloads.php