como te dice manuel tendras que tirar de optico y coaxial,para enganchar 2 hdmi nesecitaras un hub.
uno asi te vale
Amazon.com: OREI HD-104 1x4 4 Ports HDMI Powered Splitter Ver 1.3 Certified for Full HD 1080P & 3D Support (One Input To Four Outputs): Electronics

si lo quieres mas completo.
Amazon.com: Etekcity® Premium 6x2 HDMI 1.4 True Matrix Switch/Splitter (6-in, 2-out) with Remote Control Supports HDMI 1.4, 3D, 1080p, 4K x 2K, ARC Audio Return, Lossless Audio, Dolby Digital/DTS 7.1 Surround Sound, Toslink and 3.5mm Audio Output, ,