If the cable you planned on using to power your pi 4 does not work using a usb c phone charger or an older charger with a type c adapter is suggested as they are less likely to use e marker chips.
Pi power cable.
This didn t affect the usb c cable and power adapter that shipped with the raspberry pi 4 desktop kit nor should it affect any future raspberry pi 4s you buy but it s definitely something to.
When you have a generic usb power adapter you ll need a us to micro usb cable to connect that power to your raspberry pi.
If you are using a hub that backfeeds to the raspberry pi and the hub experiences a power surge your raspberry pi could potentially be damaged.
This means that the hubs will power the raspberry pi through its usb cable input cable without the need for a separate micro usb power cable and bypass the voltage protection.
This technology uses a standard ethernet cable to send power to a special add on board fitted to a raspberry pi.
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It has the added benefit of connecting a pi to the internet at the same time using special injectors.