windows set tv box

Has anyone heard of a set box tv by Windows? I had never heard of a set tv box until someone was trying to get my husband to buy one and said it was a windows box for smart tv's. I cannot find any features or information about this set tv box. Does anyone know anything about something like this that has windows or is made by windows and if so where can I find information about it so I can determine if I want to buy one....

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