The listings show high-speed HDMI bandwidths commonly at about 18 Gbps, with ultra-high-speed HDMI options rated up to 48 Gbps.
Some cables are labeled CL3 for in-wall installation, and many descriptions highlight braided or premium braided jackets for added durability and protection.
Connectors are often gold-plated or made from zinc alloy, and many cables list multi-layer shielding (for example, triple shielding) to minimize signal loss and interference.
Common options are HDMI cables, which carry both video and audio, and optical (Toslink) cables for digital audio-only connections.
Listings include Full HD (1080p) and 2K/QHD (1440p) up to 4K and 8K. Refresh rates shown include 60 Hz and, for some HDMI 2.1 cables, up to 120 Hz (for example 4K@60Hz, 4K@120Hz, and 8K@60Hz).
Some cables include an active chipset to regenerate and balance video signals for longer runs. HDMI 2.1-capable cables list gaming features such as Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), Quick Frame Transport (QFT) and Quick Media Switching (QMS).
Options include optical (Toslink) digital-audio cables and HDMI cables that support multichannel audio; some HDMI listings also mention Audio Return Channel (ARC) or Enhanced ARC (eARC).
