@Reif frame has an external connection box. for HDMI connections, don’t know how big it is.
one is 5 inches tall
https://www.samsung.com/us/support/answer/ANS00062213/
but maybe some are smaller
https://www.techradar.com/news/the-samsung-one-connect-box-is-back-for-2021-but-something-needs-to-change
the one I have on my 2017 82in tv is fairly small, thin
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