HDMI & DisplayPort Video Connectors from China
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High-speed video connectors live and die on signal integrity: HDMI 2.1 carries 48 Gbps and DisplayPort 2.0 up to 80 Gbps, and at those rates the connector's 100Ω differential impedance and the gold plating on the contacts matter more than the molded shell. HDMI also carries a licensing and royalty obligation that DisplayPort's royalty-free model does not — something that affects which port a cost-sensitive product should specify. When sourcing these from China, the typical failure mode is impedance discontinuity and thin contact plating that passes a continuity check but fails an eye-diagram or intermittent-link test at full bandwidth.
HDMI and DisplayPort connectors transport high-speed digital video. The practical sourcing trap is buying on price: a part that 'works' at 1080p can fail at 4K/120 or 8K because of impedance and plating shortcuts. We verify against high-speed test data, not just a visual sample.
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FAQ
Do I owe HDMI royalties if I use HDMI connectors from China?
HDMI adoption carries a licensing/royalty framework that applies at the product level; DisplayPort is royalty-free. If royalty exposure or licensing is a concern, DisplayPort or USB-C with DP Alt Mode is often the cheaper path.
What goes wrong with cheap high-speed video connectors?
Impedance discontinuity and under-spec contact plating. They pass continuity testing but cause intermittent links, sparkle, or dropouts at high bandwidth (4K/120, 8K). Ask for the 100Ω impedance spec and plating thickness, and test at full rate.
Which connector should I specify for a new product?
Match it to bandwidth and licensing: HDMI 2.1 for 48 Gbps display chains where ecosystem compatibility matters, DisplayPort/USB-C DP Alt Mode when you want royalty-free and the higher 80 Gbps headroom of DP 2.0.
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