I just tested it for you. Plex can be installed and runs fine. Apart from that, it's a great TV for the money! See also the reviews on Amazon, for example.

Maybe the colour too...? For the article with item number 12648121 it says: "Exact colour description Black" and for the item with item number 12422356 : "Exact colour description Silver"..Also the packaging dimensions are not the same ...but otherwise I think it's the same model too.

The product has a refresh rate of 60 Hz. We are trying to correct the error in the online shop. Thank you for your comment.

This has been corrected in the meantime, the current price is now 462.

Only a power cable is included in the delivery. Depending on the devices you connect, you have to buy the corresponding cables additionally. HDMI, antenna cable etc.

The screen height is 716mm. I think the specified height of 767mm will be with feet.

Addendum to my question: https://www.chinahandys.net/xiaomi-mi-tv-5-und-mi-tv-5-pro-vorgestellt/

Unfortunately, we do not have any information on this.