HDMI Cords: Buying by Class, Length and Connector
Cord and cable mean the same thing. What differs is the bandwidth class, the length and the physical connector size at each end, and all three have to be right.
Quick Answer
| Class | Use | Safe passive length |
|---|---|---|
| Standard | 1080i legacy | Long, up to 15 m |
| High Speed | 1080p and 4K at 30 Hz | Up to about 10 m |
| Premium High Speed | 4K at 60 Hz with HDR | Up to about 5 m |
| Ultra High Speed | 4K120, 8K60, variable refresh | Up to about 3 m |
| Active or optical | Long runs at high bandwidth | 15 m and beyond |
Choose the class for the most demanding device in the chain, then pick the length within that class.
Connector Sizes
Standard HDMI
The normal connector, used on televisions, players, consoles and computers.
Mini HDMI
Found on some cameras and older tablets. Mechanically different but electrically the same standard.
Micro HDMI
Used on small cameras and a few single board computers. Easier to damage because of its size.
Adapters and adapters that lose features
Adapters between sizes are passive and generally transparent, but an extra joint is an extra failure point.
Length and Failure Modes
Over long runs
High bandwidth content fails first. You may see 1080p work and 4K fail from the same cord.
Intermittent blanking
Usually a marginal cord or a poor connector rather than the source or display.
No HDR
Insufficient bandwidth causes the source to reduce the signal, which often drops HDR first.
Physical damage
Sharp bends at the connector are the most common cause of failure. Support the cord where it exits the plug.
Buying Steps
- Identify the connector size needed at each end.
- Match the class to the highest requirement in the chain.
- Measure the run and add a little slack.
- Go active or optical beyond the passive limits.
- Test the highest mode you need after installation.
Real-World Applications
- Television to set top box or console.
- Computer to monitor or projector.
- Camera to a field monitor.
- Single board computer to a display.
Related Guides
For the 48 Gbps class, read Ultra High Speed HDMI 2.1 cable. For long runs, see 50 foot HDMI cable. For conversion, start with USB-C to HDMI adapter.
FAQ
Are all HDMI cords the same?
No. They differ in bandwidth class, length and connector size.
How long can a cord be for 4K at 60 Hz?
About five metres on passive copper. Longer runs need an active or optical cord.
Do mini and micro HDMI carry the same signal?
Yes, the electrical standard is the same. Only the connector differs.
Why does HDR stop working on a longer cord?
The cord cannot carry the signal, so the source reduces it and may drop HDR first.