AV-Cables 12G HD SDI 4K UHD BNC - 4855R Mini RG59 Cable (SDI-12G-4855R)
2Pcs 3G HD SDI Cable BNC Cable 30cm 75 Ohm for Cameras BMCC Video Equipment Supports HD-SDI 3G-SDI 4K 8K SDI Video Cable - AliExpress
Blackmagic SDI Multiplex 4K - CONVMSDIMUX4K - Mini Converter
12G/6G/3G/HD-SDI to HDMI 2.0 Converter with Audio Extractor (PRO-SDIHD2)
Amazon.com: 4K HDMI to SDI Converter, Support 4Kx2K/60Hz HDMI 2.0 Input and 3G-SDI/HD-SDI Output, One HDMI in Two SDI Out, Auto Format Detection & Audio Embedder : Electronics