HDMI output to input adapter for laptop

I have a laptop with a 4K display that I want to use as a display for my Xbox one. It doesn't have an HDMI input. He does have an HDMI output. I tried connecting it to the HDMI output for shits and giggles but no dice. The general consensus is that you can't convert a HDMI output to an HDMI input however they do have adapters that are sold for that. However even if I converted the HDMI output to HDMI input I don't think that would work. They also have cables that are USB dongle that just plug into USB port and have a female HDMI input, I believe that could work but on the PCs hardware I think the HDMI adapter is placed on the video card so I'm not really sure how USB would get that kind of video input in. And even further even if I could get this to work I really doubt they would support the 4K resolution. It just sucks because I have a pretty big 4K monitor to use and an Xbox one S that supports 4K, but I can't really use it. Any ideas. Thanks in advance.

ProcessorIntel Core i7-4710HQ 2.5 GHz (Intel Core i7)
Graphics adapterNVIDIA GeForce GTX 960M - 4096 MB, Core: 1097-1176 MHz, Memory: 1253 MHz, GDDR5, ForceWare 352.86 (, Optimus
Memory16384 MB
, DDR3-1600, dual-channel, two memory banks (both filled)
Display15.6 inch 16:9, 3840x2160 pixel, Samsung L FLLTN156FL02L01, IPS, glossy: yes (Just says 256gb SSD)

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