Topic hub
HDMI, DisplayPort, USB-C video paths, cable classes, and bandwidth decisions.
This is a discovery hub, not a standalone article. Most substantive assets are English originals, with a small Japanese-original set retained. Each card states the original language so discovery copy is never confused with a canonical translation.
HDMI 2.2 expands the link to as much as 96Gbps with next-generation FRL, but real display modes still depend on the source, display, and cable implementing compatible capabilities.
Ultra96 HDMI Cable is the higher-bandwidth certified class for HDMI 2.2 applications up to 96Gbps, while Ultra High Speed HDMI Cable targets system configurations up to 48Gbps.
HDMI uses FRL for newer high-bandwidth modes while TMDS remains part of the compatibility story. A working HDMI connection is not proof that the intended high-bandwidth FRL mode is active.
VESA DP54 certification covers four-lane UHBR13.5 operation up to 54Gbps, while DP80 covers four-lane UHBR20 operation up to 80Gbps.
A USB-C connector alone does not guarantee DisplayPort video output. The source port must implement the required video function, such as DisplayPort Alt Mode.
VESA's UHBR classes correspond to 10, 13.5, and 20Gbps per lane; across four lanes those raw signaling rates map to 40, 54, and 80Gbps before transport overhead.
Use VESA's DP40/DP80 certification concept to check whether a cable is intended for the UHBR link class your display path requires.
Convert a selected UHBR per-lane rate and lane count into raw signaling capacity, while keeping encoding and video-payload calculations outside the result.
Check whether both HDMI endpoints, the cable, and the target video mode actually require and support the higher-bandwidth HDMI 2.2/Ultra96 path.
A USB-C display connection can use DisplayPort Alt Mode or a USB4 tunneling path; identifying the actual transport helps explain why identical-looking ports behave differently.
