HDMI to Mini HDMI Adapter The Helos adapter is an adapter that converts the signal from HDMI-A (socket) to Mini HDMI-C (plug). It is equipped with everything that makes for professional use: Ethernet channel (HEAC) and ARC, high reliability and precisely fitting and gold-plated plugs for a long-term and trouble-free connection without sacrificing quality. Precise fit, durable and without loss The high-precision manufactured and perfectly fitting plugs with 24-carat gold-plated contacts guarantee optimal signal transmission and permanently reliable function.