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Re:All About USB-C: Illegal Adapters by fragmede on Tuesday December 27, 2022 @03:03PM (#34153093)
That device, the speaker in this case, is missing the pull-down (Rd) resistors on CC1 and CC2 to say that it's happy to get 5v@500ma when connected using a USB-C to USB-C cable. Those resistors aren't needed for signaling when using a USB-C to USB-A cable, which is why that works.

https://community.silabs.com/s/article/what-s-the-role-of-cc...

Re:All About USB-C: Illegal Adapters by RobotToaster on Tuesday December 27, 2022 @03:36PM (#34153457)
So they saved a fraction of a cent per unit on two resistors?
Re:All About USB-C: Illegal Adapters by fragmede on Tuesday December 27, 2022 @03:41PM (#34153504)
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