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Tuesday, April 21st, 2026 7:13 PM

Anyone know what is this?

Xfinity tech installed this in my home long time ago.  What does it do?

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501 Messages

8 hours ago

On the side of the little metal box that we can't see, it probably says "power inserter" or something similar.  If so, it takes power from the AC adapter and adds it to the coax cable.  So you may have some other device like an amplifier or active splitter somewhere that needs that power.

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