Aura Right angled HDMI coupler 90 Deg (Down) V2.0 4K. Right angled HDMI coupler 90 Deg. A quality right angled HDMI adaptor available as part of a range of audio connections and adaptors. This 90 Deg HDMI right angled coupler supports 4K 60Hz 4:4:4 and can be used with any cable to improve connectivity access to equipment. Male to Female connections, metal and plastic construction with gold plated contacts.