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All our meeting rooms are set-up so there is a single USB-C cable on the desk which is connected to a docking station under the desk. This docking station supplies video (HDMI), audio (speaker & microphone), network and power to the laptop. Works very well and users aren't tempted to keep messing.

However, this only works with laptops with USB-C that also support the alternative mode functionality, i.e. video/Thunderbolt/DisplayPort over USB-C. If somebody turns up with an older laptop that only has HDMI, they can't plug in.

We're looking for some adapter to allow them to plug this USB-C plug into their USB-3 socket on the laptop. I'm aware that we're not looking for a simple USB-3(A) to USB-C adapter as they just carry data. They need to carry video.

Before USB-C, we used devices like this. They are effectively an external graphics card connected via USB-3. Trying to find a device like this but instead of HDMI output, it's USB-C carrying data, video and audio.

I'm not convinced they exist!

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  • Are you looking for an HDMI to USB-C cable adapter like random example?
    – harrymc
    Commented Oct 21, 2022 at 15:14
  • @harrymc No, that has the same functionality of the dock they already have. They're trying to find a device like this [a DisplayLink device or similar] but instead of HDMI output, it's USB-C. And no, AFAIK, there isn't such thing and that's good to avoid adding to the already very confusing USB-C usages.
    – ChanganAuto
    Commented Oct 21, 2022 at 15:17
  • @munrobasher Although perhaps you shouldn't use such, there are simple USB-C to USBA-A adapters that work for the DisplayLink device. Even better a proper USB-C hub with USB3.0 ports and then connect the DisplayLink device to that one. Or, if your docking station has USB3.0 ports like most, there's nothing wrong in connecting the DisplayLink device there.
    – ChanganAuto
    Commented Oct 21, 2022 at 15:21
  • I'm confused : There is a conflict between "older laptop that only has HDMI" and between "plug this USB-C plug into their USB-3 socket". USB-3 supports alternative mode.
    – harrymc
    Commented Oct 21, 2022 at 15:36
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    I'd say you have rather limited yourselves by choosing to carry video solely over USB-C. You should have also made sure standard HDMI connectivity is available in all of your meeting rooms. With a standard HDMI cable you open up your compatibility to a much wider range of display connections through the use of all the available adapters that exist out there.
    – Mastaxx
    Commented Oct 21, 2022 at 16:00

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