Often mistaken by 75% of people here, this used to duplicate an HDMI source. If you want to connect the HDMI terminals on a single output, you need a HDMI SWITCH. This product works great, quality is very good and the sound is reproduced identically (no offset). I recommend given the very low price of this product, that goes very well with HD capture card.
Thank you Amazon, despite delivery by Expro long (12 days)