For those of you who are using older pre-HDMI monitors or have used DF/HM input cables, this unit will work great. I tried using an HDMI splitter and HM HDMI cable but that didn't work. The part of the HDMI cable is used for power transmission. This circuit is missing from the adapter cables, so the splitter is out of order. No power is required (or it actually comes from the port) when transferring data from the USB-C port, so the issue has been resolved. Now I'm running multiple monitors via USB at max resolution. Great product, I will buy again!
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