Blackmagic Micro Converter HDMI to SDI 3G (with USB-C power supply)

Aja D10CEA 4-Channel SDI to Component/Composite Video and Audio Converter *read*

Blackmagic Design SDI to HDMI Mini Converter w/Power Supply

Blackmagic Design Mini Converter Heavy Duty HDMI to SDI; tested, powers on

Blackmagic Design SDI to HDMI 4K 6G Mini Converter

Blackmagic Design Mini Converter Optical Fiber 12G-SDI with FieldCast 12G SFP

CONVMASA - Blackmagic Design Mini Converter SDI to Analog

AJA Hi5-4K-PLUS SDI to HDMI Converter