nRF52840DK - problems getting started

[Alex_S@Aperia]

Purchased nRF52840 DK. 
Plugged it with USB cable to my Win11 PC
Trying to follow instructions in the enclosed brochure, which points to nordicsemi.com/start52840dk
Step 4 - Flip the power switch to "on"


The switch highlighted in the picture is marked VEXT->nRF, power switch is to the left of it.
So, I flip the actual power switch. The power source switch is set to VDD.
LED 1 starts blinking very slowly, LED 5 is blinking very fast
I don't see any pop-ups or any other indication that PC recognizes the board, no COM port get created.
I have SEGGER J-Link V7.96f for Windows installed.
J-Link commander fails to find the DK
Is there any additional software I need to install ? 

[Alex_S@Aperia]

Also, this is very similar  nRF52840 power on led(Led 5) blinking continuously
I already tried 2 USB micro cables, perhaps these both are power only, I'll see if I can find some more

[Priyanka]

Hi Aleksander,

Please do try with other USB cables and let me know how it goes. 

Regards,

Priyanka

[Alex_S@Aperia]

Yes, it was the cable, got one from Anker.
The 2 cables I tried before both have USB trident logo, which they shouldn't legally have without data wires, but they do...

I can see the board in all apps now, as well as CDC ports, so my issue is resolved.
Thank you !

Still, I would recommend to update the DK startup guide, the picture is clearly wrong.
And perhaps add a warning about USB cable

[Priyanka]

Hi Alexander,

Glad to hear that it's working now and thanks for the feedback. 

Regards,

Priyanka