I have a portable touch screen that you can connect to a computer in two ways:
- Use an HDMI cable to send video+audio to the screen, then use a USB-C to USB-A cable to send touch input from the screen to the PC and use another USB-C to USB-A cable to provide power to the monitor.
- Use a single USB-C to USB-C cable for everything. (Requires the PC to have a USB-C port that supports DisplayPort Alt Mode and that can deliver more than 2W of power.)
The Laptop I want to use this touchscreen with only has old USB 3.0 ports, an HDMI port and a DisplayPort (which is already connected to another external display).
Now i would like to have an adapter that has a USB input, an HDMI input, (maybe also another power input) and a single USB-C output that supports >2W power and DP alt mode.
Does such a thing exist?
I can only find USB-C to HDMI converters and the like, but nothing that has HDMI input and USB-C output.
HDMI and DP has incompatible signaling, so no passive adapters are possible.
You need an adapter with a chip that has an HDMI input and a DP output. Not sure if such a thing exists due to low demand, but good luck.
I have the one below: Drivers a fickle, forewarning.
There is a x4 version as well
Never tried in your configuration, mine is DP out (VGA) to DP in (Card) to USB-C out (Card) to Display
Dell has a guide for HDMI to DP out:
@Methylzero HDMI to DP converters definitely exist: https://www.amazon.com/Active-DisplayPort-Adapter-Converter-Gold-Plated/dp/B0752D33PJ/
But thinking about it, my monitor might actually support HDMI Alt Mode as well.
Thanks, but I don’t like the idea of trying to hack a pcie card into my laptop. I’m looking for an external device that can do it.
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