Google Chromecast with Google TV 4K USB OTG Adapter & HDMI 180 Degree Extender The hdmi extender is a cablesson branded cable and seems to be the only 4k compatible white cable available. TV connection end rotates 180 degrees. The OTG adapter works well with original power supply so you can connect up a K/B, mouse or USB memory stick. THIS OBVIOUSLY DOESN'T INCLUDE CHROMECAST GIVEN THE DESCRIPTION AND PHOTOS!
eBay