The connection with an HDMI cable of one meter length between the digital cable receiver and an Acer projector worked immediately and I was thrilled. However, the consequent need to install a 5-meter HDMI cable supplied no signal. May be that the adapter via a Micro USB jack powered by a 5 volt external power source lacks easily in the product description. Demand installation with an appropriate power supply 220V / 5V 1200mA brought the desired result.
References once again to a part of my assistant review:
So even though pure plug-and-play is tempting and probably many devices so get on well, I would operate the adapter with additional power supply via USB. I subtract a star because the claim "no external power supply required" not wrong (one can easily draw the necessary power from most USB ports), but not exactly complete. Otherwise, a strong buy recommendation for anyone who knows what he's doing.