The boosted HDMI cables are made from Oxygen Free Copper(OFC) providing a high-quality connection between devices. The cables are actively boosted to achieve a larger distribution of up to 50 metres (depending on model bought). Supports resolutions of 1080P for high-quality picture, coupled together with 3D support, Audio Return Channel(ARC) and Ethernet channel you can enjoy high-quality movies with sound via your home theatre system while having access to the internet.
The USB connector is for extra power and not needed under normal use.
Please note that due to the cable being actively boosted, it is to be installed correctly in accordance with the input/output labeling (the output being connected to TV/Display etc).