The Swit S-4601 is a mini converter for HDMI to SDI conversion, widely used on broadcasting the HDMI video source, supports up to 1080p 50/60 HDMI converted to 3Gb/s SDI.

Inputs and outputs:

1× HDMI Type-A input
2× 3G/HD/SD-SDI output (Reclocked)
1× 3.5mm audio input
(The HDMI to SDI supports the same format conversion only.)
S-4601 features low SDI jitter and SDI re-clocking so that you can use the longest SDI cable lengths and maintain pristine quality images.

More details in this manual.