![]() The manufacturer is now using this chip for the Pi 4 B and Pi 400. In mid-2021, Pi 4 B models appeared with the improved Broadcom BCM2711 C0. The design flaw was fixed in revision 1.2 of the board, released in late 2019. Tom's Hardware tested 14 different cables and found that 11 of them turned on and powered the Pi without issue. The initial Raspberry Pi 4 board had a design flaw where third-party e-marked USB cables, such as those used on MacBooks, incorrectly identify it and refuse to provide power. But the Pi can only be operated with 5 volts and not 9 or 12 volts like other mini computers of this class. The Raspberry Pi 4 is also powered via a USB-C port, enabling additional power to be provided to downstream peripherals, when used with an appropriate PSU. The 8 GB version has a revised circuit board. The version with 1 GB RAM has been abandoned and the prices of the 2 GB version have been reduced.
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