extends overall length of HDMI cable. No noticeable signal loss, have to secure both cables as there is no real restraint holding each into this adapter, Used it for two 25 foot cables under the living room floor.
My old setup was cabled with high dollar retail store cables. I have added a few more input devices and these cables have worked out great. I don't see/hear a single difference between these and the other cables that cost me substantially more.
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