Recently, the Raspberry Pi Foundation has confirmed that the USB-C cable with electronic tag will refuse to supply the current version of the Raspberry Pi 4 due to misidentification as an audio adapter accessory.
“A smart charger with an e-marked cable will incorrectly identify the Raspberry Pi 4 as an audio adapter accessory, and refuse to provide power. I expect this will be fixed in a future board revision, but for now users will need to apply one of the suggested workarounds. It’s surprising this didn’t show up in our (quite extensive) field testing program.”
Upton said that this technical analysis article by Tyler Ward provides a detailed explanation of why electronically tagged cables cannot power the Raspberry Pi 4. The current version of the Raspberry Pi 4 can work by using a Type-C cable without an electronic tag with a 5.1V/3A power supply or with an official Raspberry Pi 4 power supply.