The Raspberry Pi Foundation just recently introduced the 4th version of its prevalent single-board computer, the Raspberry Pi 4 Model B. Among the main selling points of USB Type-C is that it can end up being a universal standard– one cable for power, data transfer, video, and more.
Not long after, several units purchased by excited purchasers failed to power up through the USB Type C port. It looks like the designers made a vital mistake in designing the board that restricts which USB-C cable you can use. The foundation quickly performed their internal examination and have validated that new Raspberry Pi 4 Model B has an issue with some USB Type C cable failing to charge the single-board computer system.
As detailed by Tyler from scorpia.co.uk, the Raspberry Pi 4 has a non-compliant USB-C charging port and does not work with many chargers as it should. Ward was to find that Raspberry Pi didn’t design its USB-C port properly. 2 “CC” pins on a USB-C port are expected to each get their own 5.1 K ohms resistor; however, Raspberry Pi developed its circuit style that enables them to share a single resistor. It’s not a certified style and breaks compatibility with a few of the more effective USB-C chargers out there.
Whether your USB-C charger deals with the Pi 4 involves whether it utilizes an “e-marked” cable. E-marked cables are USB-C cable with chips inside that work out power management, accessory modes, data rates, and other specifications.
Given that the Pi 4 USB-C port is wired improperly, these smart cable will discover the Pi 4 as an “Audio Adaptor Accessory” and decline to charge them. Means, it finds it as an audio device like earbuds or a 3.5 mm adapter because of the inaccurate resistor setup if you plug one of those into the Raspberry Pi 4. As an outcome, the cable does not provide power, and your Raspberry Pi will not charge. Generally, e-marked cables are more costly and featured bigger, higher-powered products, like a USB-C laptop computer.
How to power Raspberry Pi 4 Model B?
The very best workaround today is to utilize a less expensive USB-C cable that does not care about the CC pin style. There is an official Pi 4 charger for sale that will work– it’s about $10 online. The Raspberry Pi Foundation will most likely repair this design mistake in future board modifications, so you may get a more suitable device if you wait on that.