04-18-2023, 06:54 PM
A certified cable's (by USB.org) max length is dependent on the connectors ...
"The cable assembly length shall be measured from the end of one connector to the end of the other connector. Cable assemblies with Standard-series plugs at both ends are limited to 5m. Cables assemblies with a Mini-B plug and Standard-A plug are limited to 4.5m. Cable assemblies with any Micro-series plugs are limited to 2m. The Standard A receptacle to Micro-A plug adapters are limited to 150mm. "
So 5m are really the max for USB A (flat rectangle) and USB B the squarer(ish) one. "Standard-series plugs"
I have two USB A to USB B cables (uncertain if they are certified) and both have proved to be unreliable.
USB extension cables are worse.
Hope this helps
"The cable assembly length shall be measured from the end of one connector to the end of the other connector. Cable assemblies with Standard-series plugs at both ends are limited to 5m. Cables assemblies with a Mini-B plug and Standard-A plug are limited to 4.5m. Cable assemblies with any Micro-series plugs are limited to 2m. The Standard A receptacle to Micro-A plug adapters are limited to 150mm. "
So 5m are really the max for USB A (flat rectangle) and USB B the squarer(ish) one. "Standard-series plugs"
I have two USB A to USB B cables (uncertain if they are certified) and both have proved to be unreliable.
USB extension cables are worse.
Hope this helps