nRF52840-DK where is VIO_REF pin

[Chuan]

My board nRF52840-DK always take several minutes to be ready after plugging usb cable in. The issue like Markus described in this ticket:

https://devzone.nordicsemi.com/f/nordic-q-a/84620/j-link-from-nrf52840-dk-takes-several-minutes-to-come-up-when-not-connected-for-a-longer-time/352462

I see that connecting pin VIO_REF to GND will solve the issue.

But I can't find the "VIO_REF on P20" on my nRF52840-DK board, could someone please show me where that pin?

About my nRF52840-DK board, I see the pins layout of P20 on my board same as document: nRF52840 DK v1.0.0 - User Guide

[Chuan]

Great, thanks for your help!