Didn't work for me. I have an Apple 4K TV and I was trying to cast an Apple 4K TV to a Sony 4K TV and a 1080P TV. No matter what I did, I couldn't get a 4K signal on my 4K TV. Spent many hours trying to figure it out. As far as I understand, this doesn't support multiple permissions, i.e. one TV is 4K and the other is 1080P. You need Multi-Resolution Output (MRO) capability, and this device doesn't have it. The second issue is that my 4K TV is 60Hz and this set is maxed out at 30Hz. It took me a while to figure this out and now I'm out of the return period. :(
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