If your laptop is over a year old, 4k60 won't work. (This Surface Go only works with 4k30) Displayport 1.2 Alternate Mode over USB-C only supports 4k60 single function or with HDMI/USB2 data adapters. None of the three laptops I tested this with have dp1.4, so they only support 4k30 with this adapter. Although they all state that they support 4k60 and it will be transmitted through a Club3d C to HDMI dongle function. Ethernet, VGA and a USB-A mouse work great with it.
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