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HDMI will not.) The sample video continued to play smoothly while I used the second monitor to browse the web and typed in OpenOffice Writer on the laptop's display. (Only the DisplayLink port will drive monitors at 4K.
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Next, I hooked up a second 4K display over HDMI - that one maxed out at 2560 x 1440, while the DisplayLink-connected monitor still output at 4K. Sample video featuring scenes of nature, a speeding car and trains moving in slow motion was clear and didn't stutter at all, and there was barely a dent in CPU usage. The first test involved hooking up one monitor to the dock over DisplayPort, which output in beautiful, detailed 4K. It isn't a powerhouse, but the average consumer may purchase it, especially at that bargain price. I connected a $499 Dell Inspi(Core i3-5010U processor, 4GB of RAM and 500GB HDD) to the dock for testing. It's a nice departure from the WD15, which ditched DisplayLink in favor of USB Type-C's alternate mode. After I installed DisplayLink drivers, it simply worked. The Dell D3100 was easy to set up and worked consistently. The dock doesn't support USB Type-C officially, but I managed to get it to work with the 2016 12-inch MacBook by adding a USB-A-to-USB-C adapter (sold separately). If your monitor doesn't support HDMI, the D3100 comes with one HDMI-to-DVI adapter so you can connect that way.
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