The Raspberry Pi 4 was announced two weeks ago as a major new upgrade to the line of cheap single-board hobbyist computers. The Pi 4 featured a faster CPU, options for up to 4GB of RAM, and a new, modern USB-C port for power delivery. The Pi 4 was the Raspberry Pi Foundation’s first ever USB-C device, and, well, they screwed it up.
The Raspberry Pi 4 brings faster CPU, up to 4GB of RAMAs detailed by Tyler Ward, the Raspberry Pi 4 has a non-compliant USB-C charging port and doesn’t work with as many chargers as it should. Thanks to the open nature of Raspberry Pi (even the schematics are online!), Ward was able to discover that Raspberry Pi just didn’t design its USB-C port correctly. Two “CC” pins on a USB-C port are supposed to each get their own 5.1K ohms resistor, but Raspberry Pi came up with its own circuit design that allows them to share a single resistor. This is not a compliant design and breaks compatibility with some of the more powerful USB-C chargers out there.