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There's no way to connect a display over DisplayPort (to get 4K@60Hz, whereas all the abundant HDMI-having docks/adapters/hubs would operate at HDMI 1.4 limiting to 4k@30Hz) while charging the laptop at the same time.

Looking for a product that supplies passthrough power while NOT converting to an HDMI signal.

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Usb type c to display port adaptors with 4k 60Hz resolution are available on the market.

In order to get a 4k 60Hz resolution output on the display port side your usb-c port must support Display Port alt mode. Laptops that have this type of usb-c ports are MacBook, ChromeBook Pixel™ and Dell™ XPS™ models 15 and 13. When the usb-c port does not support the Display Port Alt mode then the max resolution is limited (mostly to 1080p) regardless of an extra power supply for the adaptor.

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    You did not address my question which is about usb-c displayport alt mode alongside USB PD (power delivery).
    – Steven Lu
    Jun 16 '17 at 0:48
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    You're simply expanding on what I already explained about DP alt mode. Which is appreciated. But is not an answer.
    – Steven Lu
    Jun 16 '17 at 3:54
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Here's USB C to DisplayPort with PD. Hope you've found it already!

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  • Don't know who downvoted this, very helpful for me with a similar problem!
    – crobar
    Feb 6 '20 at 10:02

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