Type-C cables connect GND and Shield, but adapters do not?

[jb]

USB Type-C Spec R2.0 - August 2019.pdf

For all the cables with plugs at both ends, it says

• "All Ground return pins shall be connected together within the USB Type-C plug."
• "Shield and GND grounds shall be connected within the … plugs on both ends of the cable assembly."

For the adapters with receptacles on one end, it just says:

• "All Ground return pins shall be connected together within the USB Type-C plug."

So the Shield should not be connected to the grounds in these adapters?  Anyone know why?

[Jan Axelson]

Just a guess, but perhaps the short length doesn't require it.

[jb]

OHHHHHH there's an ECN! 

USB Type-C ENGINEERING CHANGE NOTICE
USB Implementers Forum
Form 20140811-ECN
Page: 1
Title: Adapter Assembly Shield Grounding Clarification
Applied to: USB Type-C Specification Release 2.0, August 2019

"All Ground return pins shall be connected together within the USB Type-C plug."

was changed to

"Shield and GND grounds shall be connected within the USB Type-C plug and USB … receptacle on both ends of the adapter assembly."

How frustrating that they don't just update the main document.

[Jan Axelson]

Thank you for posting this. I agree that updating the original docs would be useful.