Adapter 18V for Rock Pi X

#1

Hi All!, Question: i have an old power source from a notebook, it bring 18V (no 15v, no 20v).
What if i use it with my Rock Pi X?
Actually i`m using te same charger with a stepdown to 9v and works great.
Thanks in advance.

#2

The Rock Pi X uses USB PD, which expects an initial 5V before communicating with the charger to request higher voltages. Connecting a supply higher than 5V without negotiation can damage the circuitry, so I highly recommend against it. A proper USB PD supply should not be difficult or expensive to obtain.

#3

12V dummy adapter is recommended on wiki page, so in theory because PD is supporter up to 20V it might work. But I would contact official technical support first if I am you.