4K HDMI Audio Extractor Splitter with Toslink Coaxial Audio Out 4K 30Hz HDMI to Toslink SPDIF Coaxial Audio Converter Adapter - AliExpress
KanexPro Component with Toslink / SPDIF to HDMI Converter
Ugreen HDMI to HDMI Converter with Optical Toslink SPDIF and 3.5mm Stereo Audio Port, Male to Female HDMI Adapter Supports 4K 2K Video 40281 - Newegg.com