About the HDMI 2.1/SFP+ FMC Card category

The HDMI 2.1 / SFP+ FMC Card category covers mezzanine expansion modules that combine ultra-high-definition video interfaces (HDMI 2.1) with high-speed optical networking ports (SFP+) onto a single standard FMC card profile.

By plugging directly into an FPGA or SoC carrier board via a High Pin Count (HPC) connector, these cards give the FPGA simultaneous access to uncompressed, high-framerate video and high-throughput network streaming.

Please find the detailed product information here:
HDMI 2.1/SFP+ FMC Card