j5create USB to HDMI Adapter Dual HDMI USB 3.0 Multi Monitor Cable 4K 1080p
This USB 3.0 to Dual HDMI Multi-Monitor Adapter acts as an external video card for your MacBook or Windows computers. One of the HDMI ports can output resolutions up to 4K, while the other can output resolutions up to 2048 x 1152.