HDMI vs. SDI for video: What's the difference? - Epiphan Video
Blackmagic Design Micro Converter HDMI to SDI
SDI to HDMI Converter Adapter - Supports HD-SDI SD-SDI 3G-SDI to Full HD 1080P @ 60 Video Convertor Box Adaptor with Embedded Audio for HDMI compatible TV Display Monitor - Walmart.com
Blackmagic Design Micro Converter SDI to HDMI with Power Supply
Blackmagic HDMI to SDI 2 - CONVMBHS2 - Mini Converter
Amazon.com: HDMI to SDI Converter Adapter HDMI SDI Adapter SDI/HD-SDI/3G-SDI Adapter Support 1080P for Camera Home Theater : Electronics
Amazon.com: HDMI to SDI Converter, Micro Converter One HDMI in Two SDI Output (with Power Supply Adapter, Audio Embedder Support HDMI 1.3, 3G/HD- SDI Auto Format Detection Extender for Camera CCTV : Electronics
User manual Blackmagic Design Micro Converter HDMI to SDI (English - 811 pages)