Synaptics, the creator of DisplayLink, licenses its technology to manufacturers. I tested the only 4K UHD adapter that appears to be in stock anywhere right now: the StarTech.com USB 3.0 to HDMI Adapter, which is DisplayLink certified. It supports resolutions of up to 3840 by 2160 pixels and a display refresh rate of up to 60 hertz.
Installation requires a driver that can be downloaded from StarTech’s site (fave.co/3lsLqBP); if you’re running macOS Monterey, download the latest driver from Synaptics’ site (fave. co/3xJLmCH).
The adapter’s HDMI port supports resolutions up to 3840 by 2160 pixels.
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