The heat was noted long before a quick power up test and others are reporting it as well.
Last time this issue was present in a 5k+ model as I recall it had to do with poor solder contact points.
The v2 prototype was originally usb powered.
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The heat on the cable has nothing to do with trying out the tundra-labs adapter, because the heat was there from day one. I also pulled out the cable from the HMD and the end of the DP/USB cable on the HMD side is what is heating up - and incredibly hot temps. I ordered an IR Temperature gauge so weāll see how it works to read it and Iāll report back. But these temps are definitely not good for the connector, the cable, and the housing in that spot.
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One thing to try is unplug and reseat cable at the headset side. It might not be making proper contact and this can also make temps rise at the connection point.
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I already tried that too
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Do we have any information that would suggest some 8kX headsets are much hotter than others? That is to ask, could this be a manufacturing defect with just some of the headsets?
This pre-production unit I have is not nearly so hot, and my 5k+ even less so.
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Imho with it seemingly coming from the cable connection area on the headset it is a defect like it was with the 5k+ when we had users mention it.
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Then to me by your post seems likely a defect. Much like the lg g4 phones. Some got very hot with basic browsing. I had one of the good ones.
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NOT FINAL 8kX unit I have at the moment. The PSU very likely may have changed. Need to know if some FINAL 8kX units are not getting excessively hot.
Also need to know if the PSU area on these supposedly excessively hot units is near 60degC, or just 40degC. There is a huge difference in electronics lifespan between these case temperatures, and it may take a thermal camera to find out.
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@PimaxUSA If Pimax is not already doing this, a timelapse thermal camera 1hr burn-in might catch a lot of major defects in QA. Adequate thermal cameras for this purpose cost as little as $300 these days.
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From his earlier posts it is over 40Ā°C to be very hot to the touch.
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Correct it gets too hot to the touch. So it has to be over 40C. I will try when this temp sensor comes but not sure when itll get here. It said 2 weeks from amazon prime!
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Good luck. Infrared temperature sensors are in very high demand right now. 
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Itās not for body heat. Itās for objects only.
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I found another issue that i wasnt aware of, and in device manager the 8k x is screwing with my motion rig (AMC Thanos controller). I had to unseat all those USBās until i realized itās the 8k x causing me the problems. One of the USB Controllers says Port Reset Failed. I cant get rid of it, ive tried almost everything. It was so bad that it caused my motion rig to jump for some reason. Either the cable i have is REALLY bad or itās really overloading the USB controllers./
Doesnāt sound like thereāll be any issues powering via USB in regards to power draw:
I have no idea about the actual figures (but it should be pretty easy to check in for example USBDeview once the X arrives)ā¦ 
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I have a USB power meter, once my 8Kx arrives iāll test each of the USB lines to check powerdraw
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but donāt complain if the mainboard burns 
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If that happens itās a defect on the mainboard, not the Xā¦ 
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Well, luckily you happen to have someone on this forum with a FLIR One Pro (because I was extra frivolous with my money). I plan on using it to measure the 8K-X temperatures like I did with the 8K.
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Excellent. I see you measured 41degC with the 8K. Pimax might have pushed temperatures up just another 5degC with the 8kX, and that would probably be nothing to worry about.
I used a FLIR One or FLIR One Pro at HacDC a while back. Might be getting a FLIR One Pro my own sometime soon nowā¦
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